20408460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{317}}^1$

素因数の和:395

約数の個数: 96

約数和(自身を含む): 60903360

約数和(自身を除く): 40494900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 37, 58, 60, 74, 87, 111, 116, 145, 148, 174, 185, 222, 290, 317, 348, 370, 435, 444, 555, 580, 634, 740, 870, 951, 1073, 1110, 1268, 1585, 1740, 1902, 2146, 2220, 3170, 3219, 3804, 4292, 4755, 5365, 6340, 6438, 9193, 9510, 10730, 11729, 12876, 16095, 18386, 19020, 21460, 23458, 27579, 32190, 35187, 36772, 45965, 46916, 55158, 58645, 64380, 70374, 91930, 110316, 117290, 137895, 140748, 175935, 183860, 234580, 275790, 340141, 351870, 551580, 680282, 703740, 1020423, 1360564, 1700705, 2040846, 3401410, 4081692, 5102115, 6802820, 10204230, 20408460]

約数ペア:

[(1, 20408460), (2, 10204230), (3, 6802820), (4, 5102115), (5, 4081692), (6, 3401410), (10, 2040846), (12, 1700705), (15, 1360564), (20, 1020423), (29, 703740), (30, 680282), (37, 551580), (58, 351870), (60, 340141), (74, 275790), (87, 234580), (111, 183860), (116, 175935), (145, 140748), (148, 137895), (174, 117290), (185, 110316), (222, 91930), (290, 70374), (317, 64380), (348, 58645), (370, 55158), (435, 46916), (444, 45965), (555, 36772), (580, 35187), (634, 32190), (740, 27579), (870, 23458), (951, 21460), (1073, 19020), (1110, 18386), (1268, 16095), (1585, 12876), (1740, 11729), (1902, 10730), (2146, 9510), (2220, 9193), (3170, 6438), (3219, 6340), (3804, 5365), (4292, 4755)]