64985920

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6551}}^1$

素因数の和:6599

約数の個数: 56

約数和(自身を含む): 159763968

約数和(自身を除く): 94778048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 6551, 9920, 13102, 26204, 32755, 52408, 65510, 104816, 131020, 203081, 209632, 262040, 406162, 419264, 524080, 812324, 1015405, 1048160, 1624648, 2030810, 2096320, 3249296, 4061620, 6498592, 8123240, 12997184, 16246480, 32492960, 64985920]

約数ペア:

[(1, 64985920), (2, 32492960), (4, 16246480), (5, 12997184), (8, 8123240), (10, 6498592), (16, 4061620), (20, 3249296), (31, 2096320), (32, 2030810), (40, 1624648), (62, 1048160), (64, 1015405), (80, 812324), (124, 524080), (155, 419264), (160, 406162), (248, 262040), (310, 209632), (320, 203081), (496, 131020), (620, 104816), (992, 65510), (1240, 52408), (1984, 32755), (2480, 26204), (4960, 13102), (6551, 9920)]