64859440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{26153}}^1$

素因数の和:26197

約数の個数: 40

約数和(自身を含む): 155668608

約数和(自身を除く): 90809168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 26153, 52306, 104612, 130765, 209224, 261530, 418448, 523060, 810743, 1046120, 1621486, 2092240, 3242972, 4053715, 6485944, 8107430, 12971888, 16214860, 32429720, 64859440]

約数ペア:

[(1, 64859440), (2, 32429720), (4, 16214860), (5, 12971888), (8, 8107430), (10, 6485944), (16, 4053715), (20, 3242972), (31, 2092240), (40, 1621486), (62, 1046120), (80, 810743), (124, 523060), (155, 418448), (248, 261530), (310, 209224), (496, 130765), (620, 104612), (1240, 52306), (2480, 26153)]