2019900440

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{179}}^1\times {\mathrm{3571}}^1$

素因数の和:3840

約数の個数: 64

約数和(自身を含む): 4629312000

約数和(自身を除く): 2609411560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 179, 316, 358, 395, 632, 716, 790, 895, 1432, 1580, 1790, 3160, 3571, 3580, 7142, 7160, 14141, 14284, 17855, 28282, 28568, 35710, 56564, 70705, 71420, 113128, 141410, 142840, 282109, 282820, 564218, 565640, 639209, 1128436, 1278418, 1410545, 2256872, 2556836, 2821090, 3196045, 5113672, 5642180, 6392090, 11284360, 12784180, 25568360, 50497511, 100995022, 201990044, 252487555, 403980088, 504975110, 1009950220, 2019900440]

約数ペア:

[(1, 2019900440), (2, 1009950220), (4, 504975110), (5, 403980088), (8, 252487555), (10, 201990044), (20, 100995022), (40, 50497511), (79, 25568360), (158, 12784180), (179, 11284360), (316, 6392090), (358, 5642180), (395, 5113672), (632, 3196045), (716, 2821090), (790, 2556836), (895, 2256872), (1432, 1410545), (1580, 1278418), (1790, 1128436), (3160, 639209), (3571, 565640), (3580, 564218), (7142, 282820), (7160, 282109), (14141, 142840), (14284, 141410), (17855, 113128), (28282, 71420), (28568, 70705), (35710, 56564)]