156943240

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{491}}^1$

素因数の和:694

約数の個数: 64

約数和(自身を含む): 362387520

約数和(自身を除く): 205444280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 131, 244, 262, 305, 488, 491, 524, 610, 655, 982, 1048, 1220, 1310, 1964, 2440, 2455, 2620, 3928, 4910, 5240, 7991, 9820, 15982, 19640, 29951, 31964, 39955, 59902, 63928, 64321, 79910, 119804, 128642, 149755, 159820, 239608, 257284, 299510, 319640, 321605, 514568, 599020, 643210, 1198040, 1286420, 2572840, 3923581, 7847162, 15694324, 19617905, 31388648, 39235810, 78471620, 156943240]

約数ペア:

[(1, 156943240), (2, 78471620), (4, 39235810), (5, 31388648), (8, 19617905), (10, 15694324), (20, 7847162), (40, 3923581), (61, 2572840), (122, 1286420), (131, 1198040), (244, 643210), (262, 599020), (305, 514568), (488, 321605), (491, 319640), (524, 299510), (610, 257284), (655, 239608), (982, 159820), (1048, 149755), (1220, 128642), (1310, 119804), (1964, 79910), (2440, 64321), (2455, 63928), (2620, 59902), (3928, 39955), (4910, 31964), (5240, 29951), (7991, 19640), (9820, 15982)]