64965940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{13151}}^1$

素因数の和:13192

約数の個数: 48

約数和(自身を含む): 154667520

約数和(自身を除く): 89701580

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 13151, 26302, 52604, 65755, 131510, 170963, 249869, 263020, 341926, 499738, 683852, 854815, 999476, 1249345, 1709630, 2498690, 3248297, 3419260, 4997380, 6496594, 12993188, 16241485, 32482970, 64965940]

約数ペア:

[(1, 64965940), (2, 32482970), (4, 16241485), (5, 12993188), (10, 6496594), (13, 4997380), (19, 3419260), (20, 3248297), (26, 2498690), (38, 1709630), (52, 1249345), (65, 999476), (76, 854815), (95, 683852), (130, 499738), (190, 341926), (247, 263020), (260, 249869), (380, 170963), (494, 131510), (988, 65755), (1235, 52604), (2470, 26302), (4940, 13151)]