20079380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{809}}^1$

素因数の和:908

約数の個数: 48

約数和(自身を含む): 45314640

約数和(自身を除く): 25235260

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 73, 85, 146, 170, 292, 340, 365, 730, 809, 1241, 1460, 1618, 2482, 3236, 4045, 4964, 6205, 8090, 12410, 13753, 16180, 24820, 27506, 55012, 59057, 68765, 118114, 137530, 236228, 275060, 295285, 590570, 1003969, 1181140, 2007938, 4015876, 5019845, 10039690, 20079380]

約数ペア:

[(1, 20079380), (2, 10039690), (4, 5019845), (5, 4015876), (10, 2007938), (17, 1181140), (20, 1003969), (34, 590570), (68, 295285), (73, 275060), (85, 236228), (146, 137530), (170, 118114), (292, 68765), (340, 59057), (365, 55012), (730, 27506), (809, 24820), (1241, 16180), (1460, 13753), (1618, 12410), (2482, 8090), (3236, 6205), (4045, 4964)]