256665.0000000

素因数分解:

$2^4\times 5^1\times {\mathrm{229}}^1\times {\mathrm{331}}^1$

素因数の和:573

約数の個数: 40

約数和(自身を含む): 14202960

約数和(自身を除く): 8139040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 229, 331, 458, 662, 916, 1145, 1324, 1655, 1832, 2290, 2648, 3310, 3664, 4580, 5296, 6620, 9160, 13240, 18320, 26480, 75799, 151598, 303196, 378995, 606392, 757990, 1212784, 1515980, 3031960, 6063920]

約数ペア:

[(1, 6063920), (2, 3031960), (4, 1515980), (5, 1212784), (8, 757990), (10, 606392), (16, 378995), (20, 303196), (40, 151598), (80, 75799), (229, 26480), (331, 18320), (458, 13240), (662, 9160), (916, 6620), (1145, 5296), (1324, 4580), (1655, 3664), (1832, 3310), (2290, 2648)]