131712640

素因数分解:

$2^7\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1571}}^1$

素因数の和:1721

約数の個数: 64

約数和(自身を含む): 317481120

約数和(自身を除く): 185768480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 131, 160, 262, 320, 524, 640, 655, 1048, 1310, 1571, 2096, 2620, 3142, 4192, 5240, 6284, 7855, 8384, 10480, 12568, 15710, 16768, 20960, 25136, 31420, 41920, 50272, 62840, 83840, 100544, 125680, 201088, 205801, 251360, 411602, 502720, 823204, 1005440, 1029005, 1646408, 2058010, 3292816, 4116020, 6585632, 8232040, 13171264, 16464080, 26342528, 32928160, 65856320, 131712640]

約数ペア:

[(1, 131712640), (2, 65856320), (4, 32928160), (5, 26342528), (8, 16464080), (10, 13171264), (16, 8232040), (20, 6585632), (32, 4116020), (40, 3292816), (64, 2058010), (80, 1646408), (128, 1029005), (131, 1005440), (160, 823204), (262, 502720), (320, 411602), (524, 251360), (640, 205801), (655, 201088), (1048, 125680), (1310, 100544), (1571, 83840), (2096, 62840), (2620, 50272), (3142, 41920), (4192, 31420), (5240, 25136), (6284, 20960), (7855, 16768), (8384, 15710), (10480, 12568)]