20741600

素因数分解:

$2^5\times 5^2\times {\mathrm{11}}^1\times {\mathrm{2357}}^1$

素因数の和:2388

約数の個数: 72

約数和(自身を含む): 55262088

約数和(自身を除く): 34520488

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 80, 88, 100, 110, 160, 176, 200, 220, 275, 352, 400, 440, 550, 800, 880, 1100, 1760, 2200, 2357, 4400, 4714, 8800, 9428, 11785, 18856, 23570, 25927, 37712, 47140, 51854, 58925, 75424, 94280, 103708, 117850, 129635, 188560, 207416, 235700, 259270, 377120, 414832, 471400, 518540, 648175, 829664, 942800, 1037080, 1296350, 1885600, 2074160, 2592700, 4148320, 5185400, 10370800, 20741600]

約数ペア:

[(1, 20741600), (2, 10370800), (4, 5185400), (5, 4148320), (8, 2592700), (10, 2074160), (11, 1885600), (16, 1296350), (20, 1037080), (22, 942800), (25, 829664), (32, 648175), (40, 518540), (44, 471400), (50, 414832), (55, 377120), (80, 259270), (88, 235700), (100, 207416), (110, 188560), (160, 129635), (176, 117850), (200, 103708), (220, 94280), (275, 75424), (352, 58925), (400, 51854), (440, 47140), (550, 37712), (800, 25927), (880, 23570), (1100, 18856), (1760, 11785), (2200, 9428), (2357, 8800), (4400, 4714)]