20624540

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{593}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 45505152

約数和(自身を除く): 24880612

約数列:

[1, 2, 4, 5, 10, 20, 37, 47, 74, 94, 148, 185, 188, 235, 370, 470, 593, 740, 940, 1186, 1739, 2372, 2965, 3478, 5930, 6956, 8695, 11860, 17390, 21941, 27871, 34780, 43882, 55742, 87764, 109705, 111484, 139355, 219410, 278710, 438820, 557420, 1031227, 2062454, 4124908, 5156135, 10312270, 20624540]

約数ペア:

[(1, 20624540), (2, 10312270), (4, 5156135), (5, 4124908), (10, 2062454), (20, 1031227), (37, 557420), (47, 438820), (74, 278710), (94, 219410), (148, 139355), (185, 111484), (188, 109705), (235, 87764), (370, 55742), (470, 43882), (593, 34780), (740, 27871), (940, 21941), (1186, 17390), (1739, 11860), (2372, 8695), (2965, 6956), (3478, 5930)]