21475140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{4903}}^1$

素因数の和:4988

約数の個数: 48

約数和(自身を含む): 60966528

約数和(自身を除く): 39491388

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 73, 146, 219, 292, 365, 438, 730, 876, 1095, 1460, 2190, 4380, 4903, 9806, 14709, 19612, 24515, 29418, 49030, 58836, 73545, 98060, 147090, 294180, 357919, 715838, 1073757, 1431676, 1789595, 2147514, 3579190, 4295028, 5368785, 7158380, 10737570, 21475140]

約数ペア:

[(1, 21475140), (2, 10737570), (3, 7158380), (4, 5368785), (5, 4295028), (6, 3579190), (10, 2147514), (12, 1789595), (15, 1431676), (20, 1073757), (30, 715838), (60, 357919), (73, 294180), (146, 147090), (219, 98060), (292, 73545), (365, 58836), (438, 49030), (730, 29418), (876, 24515), (1095, 19612), (1460, 14709), (2190, 9806), (4380, 4903)]