81357720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{15767}}^1$

素因数の和:15824

約数の個数: 64

約数和(自身を含む): 249765120

約数和(自身を除く): 168407400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 5160, 15767, 31534, 47301, 63068, 78835, 94602, 126136, 157670, 189204, 236505, 315340, 378408, 473010, 630680, 677981, 946020, 1355962, 1892040, 2033943, 2711924, 3389905, 4067886, 5423848, 6779810, 8135772, 10169715, 13559620, 16271544, 20339430, 27119240, 40678860, 81357720]

約数ペア:

[(1, 81357720), (2, 40678860), (3, 27119240), (4, 20339430), (5, 16271544), (6, 13559620), (8, 10169715), (10, 8135772), (12, 6779810), (15, 5423848), (20, 4067886), (24, 3389905), (30, 2711924), (40, 2033943), (43, 1892040), (60, 1355962), (86, 946020), (120, 677981), (129, 630680), (172, 473010), (215, 378408), (258, 315340), (344, 236505), (430, 189204), (516, 157670), (645, 126136), (860, 94602), (1032, 78835), (1290, 63068), (1720, 47301), (2580, 31534), (5160, 15767)]