21898820

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{293}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 47860848

約数和(自身を除く): 25962028

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 101, 148, 185, 202, 293, 370, 404, 505, 586, 740, 1010, 1172, 1465, 2020, 2930, 3737, 5860, 7474, 10841, 14948, 18685, 21682, 29593, 37370, 43364, 54205, 59186, 74740, 108410, 118372, 147965, 216820, 295930, 591860, 1094941, 2189882, 4379764, 5474705, 10949410, 21898820]

約数ペア:

[(1, 21898820), (2, 10949410), (4, 5474705), (5, 4379764), (10, 2189882), (20, 1094941), (37, 591860), (74, 295930), (101, 216820), (148, 147965), (185, 118372), (202, 108410), (293, 74740), (370, 59186), (404, 54205), (505, 43364), (586, 37370), (740, 29593), (1010, 21682), (1172, 18685), (1465, 14948), (2020, 10841), (2930, 7474), (3737, 5860)]