399065440

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{35129}}^1$

素因数の和:35215

約数の個数: 48

約数和(自身を含む): 956098080

約数和(自身を除く): 557032640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 2272, 2840, 5680, 11360, 35129, 70258, 140516, 175645, 281032, 351290, 562064, 702580, 1124128, 1405160, 2494159, 2810320, 4988318, 5620640, 9976636, 12470795, 19953272, 24941590, 39906544, 49883180, 79813088, 99766360, 199532720, 399065440]

約数ペア:

[(1, 399065440), (2, 199532720), (4, 99766360), (5, 79813088), (8, 49883180), (10, 39906544), (16, 24941590), (20, 19953272), (32, 12470795), (40, 9976636), (71, 5620640), (80, 4988318), (142, 2810320), (160, 2494159), (284, 1405160), (355, 1124128), (568, 702580), (710, 562064), (1136, 351290), (1420, 281032), (2272, 175645), (2840, 140516), (5680, 70258), (11360, 35129)]