21522050

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{359}}^1$

素因数の和:491

約数の個数: 48

約数和(自身を含む): 44193600

約数和(自身を除く): 22671550

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 109, 110, 218, 275, 359, 545, 550, 718, 1090, 1199, 1795, 2398, 2725, 3590, 3949, 5450, 5995, 7898, 8975, 11990, 17950, 19745, 29975, 39131, 39490, 59950, 78262, 98725, 195655, 197450, 391310, 430441, 860882, 978275, 1956550, 2152205, 4304410, 10761025, 21522050]

約数ペア:

[(1, 21522050), (2, 10761025), (5, 4304410), (10, 2152205), (11, 1956550), (22, 978275), (25, 860882), (50, 430441), (55, 391310), (109, 197450), (110, 195655), (218, 98725), (275, 78262), (359, 59950), (545, 39490), (550, 39131), (718, 29975), (1090, 19745), (1199, 17950), (1795, 11990), (2398, 8975), (2725, 7898), (3590, 5995), (3949, 5450)]