81270880

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29879}}^1$

素因数の和:29911

約数の個数: 48

約数和(自身を含む): 203303520

約数和(自身を除く): 122032640

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 29879, 59758, 119516, 149395, 239032, 298790, 478064, 507943, 597580, 956128, 1015886, 1195160, 2031772, 2390320, 2539715, 4063544, 4780640, 5079430, 8127088, 10158860, 16254176, 20317720, 40635440, 81270880]

約数ペア:

[(1, 81270880), (2, 40635440), (4, 20317720), (5, 16254176), (8, 10158860), (10, 8127088), (16, 5079430), (17, 4780640), (20, 4063544), (32, 2539715), (34, 2390320), (40, 2031772), (68, 1195160), (80, 1015886), (85, 956128), (136, 597580), (160, 507943), (170, 478064), (272, 298790), (340, 239032), (544, 149395), (680, 119516), (1360, 59758), (2720, 29879)]