66704720

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{13669}}^1$

素因数の和:13743

約数の個数: 40

約数和(自身を含む): 157642440

約数和(自身を除く): 90937720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 13669, 27338, 54676, 68345, 109352, 136690, 218704, 273380, 546760, 833809, 1093520, 1667618, 3335236, 4169045, 6670472, 8338090, 13340944, 16676180, 33352360, 66704720]

約数ペア:

[(1, 66704720), (2, 33352360), (4, 16676180), (5, 13340944), (8, 8338090), (10, 6670472), (16, 4169045), (20, 3335236), (40, 1667618), (61, 1093520), (80, 833809), (122, 546760), (244, 273380), (305, 218704), (488, 136690), (610, 109352), (976, 68345), (1220, 54676), (2440, 27338), (4880, 13669)]