128445928

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{65003}}^1$

素因数の和:65041

約数の個数: 32

約数和(自身を含む): 273016800

約数和(自身を除く): 144570872

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1976, 65003, 130006, 260012, 520024, 845039, 1235057, 1690078, 2470114, 3380156, 4940228, 6760312, 9880456, 16055741, 32111482, 64222964, 128445928]

約数ペア:

[(1, 128445928), (2, 64222964), (4, 32111482), (8, 16055741), (13, 9880456), (19, 6760312), (26, 4940228), (38, 3380156), (52, 2470114), (76, 1690078), (104, 1235057), (152, 845039), (247, 520024), (494, 260012), (988, 130006), (1976, 65003)]