257946320

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{29581}}^1$

素因数の和:29703

約数の個数: 40

約数和(自身を含む): 605247720

約数和(自身を除く): 347301400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 29581, 59162, 118324, 147905, 236648, 295810, 473296, 591620, 1183240, 2366480, 3224329, 6448658, 12897316, 16121645, 25794632, 32243290, 51589264, 64486580, 128973160, 257946320]

約数ペア:

[(1, 257946320), (2, 128973160), (4, 64486580), (5, 51589264), (8, 32243290), (10, 25794632), (16, 16121645), (20, 12897316), (40, 6448658), (80, 3224329), (109, 2366480), (218, 1183240), (436, 591620), (545, 473296), (872, 295810), (1090, 236648), (1744, 147905), (2180, 118324), (4360, 59162), (8720, 29581)]