18979884

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{167}}^1$

素因数の和:236

約数の個数: 144

約数和(自身を含む): 61641216

約数和(自身を除く): 42661332

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 33, 36, 41, 42, 44, 63, 66, 77, 82, 84, 99, 123, 126, 132, 154, 164, 167, 198, 231, 246, 252, 287, 308, 334, 369, 396, 451, 462, 492, 501, 574, 668, 693, 738, 861, 902, 924, 1002, 1148, 1169, 1353, 1386, 1476, 1503, 1722, 1804, 1837, 2004, 2338, 2583, 2706, 2772, 3006, 3157, 3444, 3507, 3674, 4059, 4676, 5166, 5412, 5511, 6012, 6314, 6847, 7014, 7348, 8118, 9471, 10332, 10521, 11022, 12628, 12859, 13694, 14028, 16236, 16533, 18942, 20541, 21042, 22044, 25718, 27388, 28413, 33066, 37884, 38577, 41082, 42084, 47929, 51436, 56826, 61623, 66132, 75317, 77154, 82164, 95858, 113652, 115731, 123246, 143787, 150634, 154308, 191716, 225951, 231462, 246492, 287574, 301268, 431361, 451902, 462924, 527219, 575148, 677853, 862722, 903804, 1054438, 1355706, 1581657, 1725444, 2108876, 2711412, 3163314, 4744971, 6326628, 9489942, 18979884]

約数ペア:

[(1, 18979884), (2, 9489942), (3, 6326628), (4, 4744971), (6, 3163314), (7, 2711412), (9, 2108876), (11, 1725444), (12, 1581657), (14, 1355706), (18, 1054438), (21, 903804), (22, 862722), (28, 677853), (33, 575148), (36, 527219), (41, 462924), (42, 451902), (44, 431361), (63, 301268), (66, 287574), (77, 246492), (82, 231462), (84, 225951), (99, 191716), (123, 154308), (126, 150634), (132, 143787), (154, 123246), (164, 115731), (167, 113652), (198, 95858), (231, 82164), (246, 77154), (252, 75317), (287, 66132), (308, 61623), (334, 56826), (369, 51436), (396, 47929), (451, 42084), (462, 41082), (492, 38577), (501, 37884), (574, 33066), (668, 28413), (693, 27388), (738, 25718), (861, 22044), (902, 21042), (924, 20541), (1002, 18942), (1148, 16533), (1169, 16236), (1353, 14028), (1386, 13694), (1476, 12859), (1503, 12628), (1722, 11022), (1804, 10521), (1837, 10332), (2004, 9471), (2338, 8118), (2583, 7348), (2706, 7014), (2772, 6847), (3006, 6314), (3157, 6012), (3444, 5511), (3507, 5412), (3674, 5166), (4059, 4676)]