19635220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{599}}^1$

素因数の和:768

約数の個数: 48

約数和(自身を含む): 45360000

約数和(自身を除く): 25724780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 149, 220, 298, 596, 599, 745, 1198, 1490, 1639, 2396, 2980, 2995, 3278, 5990, 6556, 6589, 8195, 11980, 13178, 16390, 26356, 32780, 32945, 65890, 89251, 131780, 178502, 357004, 446255, 892510, 981761, 1785020, 1963522, 3927044, 4908805, 9817610, 19635220]

約数ペア:

[(1, 19635220), (2, 9817610), (4, 4908805), (5, 3927044), (10, 1963522), (11, 1785020), (20, 981761), (22, 892510), (44, 446255), (55, 357004), (110, 178502), (149, 131780), (220, 89251), (298, 65890), (596, 32945), (599, 32780), (745, 26356), (1198, 16390), (1490, 13178), (1639, 11980), (2396, 8195), (2980, 6589), (2995, 6556), (3278, 5990)]