20783880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4441}}^1$

素因数の和:4471

約数の個数: 96

約数和(自身を含む): 72759960

約数和(自身を除く): 51976080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 156, 180, 195, 234, 260, 312, 360, 390, 468, 520, 585, 780, 936, 1170, 1560, 2340, 4441, 4680, 8882, 13323, 17764, 22205, 26646, 35528, 39969, 44410, 53292, 57733, 66615, 79938, 88820, 106584, 115466, 133230, 159876, 173199, 177640, 199845, 230932, 266460, 288665, 319752, 346398, 399690, 461864, 519597, 532920, 577330, 692796, 799380, 865995, 1039194, 1154660, 1385592, 1598760, 1731990, 2078388, 2309320, 2597985, 3463980, 4156776, 5195970, 6927960, 10391940, 20783880]

約数ペア:

[(1, 20783880), (2, 10391940), (3, 6927960), (4, 5195970), (5, 4156776), (6, 3463980), (8, 2597985), (9, 2309320), (10, 2078388), (12, 1731990), (13, 1598760), (15, 1385592), (18, 1154660), (20, 1039194), (24, 865995), (26, 799380), (30, 692796), (36, 577330), (39, 532920), (40, 519597), (45, 461864), (52, 399690), (60, 346398), (65, 319752), (72, 288665), (78, 266460), (90, 230932), (104, 199845), (117, 177640), (120, 173199), (130, 159876), (156, 133230), (180, 115466), (195, 106584), (234, 88820), (260, 79938), (312, 66615), (360, 57733), (390, 53292), (468, 44410), (520, 39969), (585, 35528), (780, 26646), (936, 22205), (1170, 17764), (1560, 13323), (2340, 8882), (4441, 4680)]