20947860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4013}}^1$

素因数の和:4057

約数の個数: 72

約数和(自身を含む): 65749320

約数和(自身を除く): 44801460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 870, 1044, 1305, 1740, 2610, 4013, 5220, 8026, 12039, 16052, 20065, 24078, 36117, 40130, 48156, 60195, 72234, 80260, 116377, 120390, 144468, 180585, 232754, 240780, 349131, 361170, 465508, 581885, 698262, 722340, 1047393, 1163770, 1396524, 1745655, 2094786, 2327540, 3491310, 4189572, 5236965, 6982620, 10473930, 20947860]

約数ペア:

[(1, 20947860), (2, 10473930), (3, 6982620), (4, 5236965), (5, 4189572), (6, 3491310), (9, 2327540), (10, 2094786), (12, 1745655), (15, 1396524), (18, 1163770), (20, 1047393), (29, 722340), (30, 698262), (36, 581885), (45, 465508), (58, 361170), (60, 349131), (87, 240780), (90, 232754), (116, 180585), (145, 144468), (174, 120390), (180, 116377), (261, 80260), (290, 72234), (348, 60195), (435, 48156), (522, 40130), (580, 36117), (870, 24078), (1044, 20065), (1305, 16052), (1740, 12039), (2610, 8026), (4013, 5220)]