28765620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{647}}^1$

素因数の和:694

約数の個数: 144

約数和(自身を含む): 99066240

約数和(自身を除く): 70300620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 19, 20, 26, 30, 36, 38, 39, 45, 52, 57, 60, 65, 76, 78, 90, 95, 114, 117, 130, 156, 171, 180, 190, 195, 228, 234, 247, 260, 285, 342, 380, 390, 468, 494, 570, 585, 647, 684, 741, 780, 855, 988, 1140, 1170, 1235, 1294, 1482, 1710, 1941, 2223, 2340, 2470, 2588, 2964, 3235, 3420, 3705, 3882, 4446, 4940, 5823, 6470, 7410, 7764, 8411, 8892, 9705, 11115, 11646, 12293, 12940, 14820, 16822, 19410, 22230, 23292, 24586, 25233, 29115, 33644, 36879, 38820, 42055, 44460, 49172, 50466, 58230, 61465, 73758, 75699, 84110, 100932, 110637, 116460, 122930, 126165, 147516, 151398, 159809, 168220, 184395, 221274, 245860, 252330, 302796, 319618, 368790, 378495, 442548, 479427, 504660, 553185, 639236, 737580, 756990, 799045, 958854, 1106370, 1438281, 1513980, 1598090, 1917708, 2212740, 2397135, 2876562, 3196180, 4794270, 5753124, 7191405, 9588540, 14382810, 28765620]

約数ペア:

[(1, 28765620), (2, 14382810), (3, 9588540), (4, 7191405), (5, 5753124), (6, 4794270), (9, 3196180), (10, 2876562), (12, 2397135), (13, 2212740), (15, 1917708), (18, 1598090), (19, 1513980), (20, 1438281), (26, 1106370), (30, 958854), (36, 799045), (38, 756990), (39, 737580), (45, 639236), (52, 553185), (57, 504660), (60, 479427), (65, 442548), (76, 378495), (78, 368790), (90, 319618), (95, 302796), (114, 252330), (117, 245860), (130, 221274), (156, 184395), (171, 168220), (180, 159809), (190, 151398), (195, 147516), (228, 126165), (234, 122930), (247, 116460), (260, 110637), (285, 100932), (342, 84110), (380, 75699), (390, 73758), (468, 61465), (494, 58230), (570, 50466), (585, 49172), (647, 44460), (684, 42055), (741, 38820), (780, 36879), (855, 33644), (988, 29115), (1140, 25233), (1170, 24586), (1235, 23292), (1294, 22230), (1482, 19410), (1710, 16822), (1941, 14820), (2223, 12940), (2340, 12293), (2470, 11646), (2588, 11115), (2964, 9705), (3235, 8892), (3420, 8411), (3705, 7764), (3882, 7410), (4446, 6470), (4940, 5823)]