81801640

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1\times {\mathrm{233}}^1$

素因数の和:442

約数の個数: 64

約数和(自身を含む): 189034560

約数和(自身を除く): 107232920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 131, 134, 233, 262, 268, 335, 466, 524, 536, 655, 670, 932, 1048, 1165, 1310, 1340, 1864, 2330, 2620, 2680, 4660, 5240, 8777, 9320, 15611, 17554, 30523, 31222, 35108, 43885, 61046, 62444, 70216, 78055, 87770, 122092, 124888, 152615, 156110, 175540, 244184, 305230, 312220, 351080, 610460, 624440, 1220920, 2045041, 4090082, 8180164, 10225205, 16360328, 20450410, 40900820, 81801640]

約数ペア:

[(1, 81801640), (2, 40900820), (4, 20450410), (5, 16360328), (8, 10225205), (10, 8180164), (20, 4090082), (40, 2045041), (67, 1220920), (131, 624440), (134, 610460), (233, 351080), (262, 312220), (268, 305230), (335, 244184), (466, 175540), (524, 156110), (536, 152615), (655, 124888), (670, 122092), (932, 87770), (1048, 78055), (1165, 70216), (1310, 62444), (1340, 61046), (1864, 43885), (2330, 35108), (2620, 31222), (2680, 30523), (4660, 17554), (5240, 15611), (8777, 9320)]