638898876

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{911}}^1$

素因数の和:973

約数の個数: 216

約数和(自身を含む): 2119283712

約数和(自身を除く): 1480384836

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 23, 28, 33, 36, 42, 44, 46, 63, 66, 69, 77, 84, 92, 99, 121, 126, 132, 138, 154, 161, 198, 207, 231, 242, 252, 253, 276, 308, 322, 363, 396, 414, 462, 483, 484, 506, 644, 693, 726, 759, 828, 847, 911, 924, 966, 1012, 1089, 1386, 1449, 1452, 1518, 1694, 1771, 1822, 1932, 2178, 2277, 2541, 2733, 2772, 2783, 2898, 3036, 3388, 3542, 3644, 4356, 4554, 5082, 5313, 5466, 5566, 5796, 6377, 7084, 7623, 8199, 8349, 9108, 10021, 10164, 10626, 10932, 11132, 12754, 15246, 15939, 16398, 16698, 19131, 19481, 20042, 20953, 21252, 25047, 25508, 30063, 30492, 31878, 32796, 33396, 38262, 38962, 40084, 41906, 50094, 57393, 58443, 60126, 62859, 63756, 70147, 76524, 77924, 83812, 90189, 100188, 110231, 114786, 116886, 120252, 125718, 140294, 146671, 175329, 180378, 188577, 210441, 220462, 229572, 230483, 233772, 251436, 280588, 293342, 330693, 350658, 360756, 377154, 420882, 440013, 440924, 460966, 586684, 631323, 661386, 691449, 701316, 754308, 771617, 841764, 880026, 921932, 992079, 1262646, 1320039, 1322772, 1382898, 1543234, 1613381, 1760052, 1984158, 2074347, 2314851, 2525292, 2535313, 2640078, 2765796, 3086468, 3226762, 3968316, 4148694, 4629702, 4840143, 5070626, 5280156, 6453524, 6944553, 7605939, 8297388, 9259404, 9680286, 10141252, 13889106, 14520429, 15211878, 17747191, 19360572, 22817817, 27778212, 29040858, 30423756, 35494382, 45635634, 53241573, 58081716, 70988764, 91271268, 106483146, 159724719, 212966292, 319449438, 638898876]

約数ペア:

[(1, 638898876), (2, 319449438), (3, 212966292), (4, 159724719), (6, 106483146), (7, 91271268), (9, 70988764), (11, 58081716), (12, 53241573), (14, 45635634), (18, 35494382), (21, 30423756), (22, 29040858), (23, 27778212), (28, 22817817), (33, 19360572), (36, 17747191), (42, 15211878), (44, 14520429), (46, 13889106), (63, 10141252), (66, 9680286), (69, 9259404), (77, 8297388), (84, 7605939), (92, 6944553), (99, 6453524), (121, 5280156), (126, 5070626), (132, 4840143), (138, 4629702), (154, 4148694), (161, 3968316), (198, 3226762), (207, 3086468), (231, 2765796), (242, 2640078), (252, 2535313), (253, 2525292), (276, 2314851), (308, 2074347), (322, 1984158), (363, 1760052), (396, 1613381), (414, 1543234), (462, 1382898), (483, 1322772), (484, 1320039), (506, 1262646), (644, 992079), (693, 921932), (726, 880026), (759, 841764), (828, 771617), (847, 754308), (911, 701316), (924, 691449), (966, 661386), (1012, 631323), (1089, 586684), (1386, 460966), (1449, 440924), (1452, 440013), (1518, 420882), (1694, 377154), (1771, 360756), (1822, 350658), (1932, 330693), (2178, 293342), (2277, 280588), (2541, 251436), (2733, 233772), (2772, 230483), (2783, 229572), (2898, 220462), (3036, 210441), (3388, 188577), (3542, 180378), (3644, 175329), (4356, 146671), (4554, 140294), (5082, 125718), (5313, 120252), (5466, 116886), (5566, 114786), (5796, 110231), (6377, 100188), (7084, 90189), (7623, 83812), (8199, 77924), (8349, 76524), (9108, 70147), (10021, 63756), (10164, 62859), (10626, 60126), (10932, 58443), (11132, 57393), (12754, 50094), (15246, 41906), (15939, 40084), (16398, 38962), (16698, 38262), (19131, 33396), (19481, 32796), (20042, 31878), (20953, 30492), (21252, 30063), (25047, 25508)]