205104080

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{19571}}^1$

素因数の和:19715

約数の個数: 40

約数和(自身を含む): 480531744

約数和(自身を除く): 275427664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1310, 2096, 2620, 5240, 10480, 19571, 39142, 78284, 97855, 156568, 195710, 313136, 391420, 782840, 1565680, 2563801, 5127602, 10255204, 12819005, 20510408, 25638010, 41020816, 51276020, 102552040, 205104080]

約数ペア:

[(1, 205104080), (2, 102552040), (4, 51276020), (5, 41020816), (8, 25638010), (10, 20510408), (16, 12819005), (20, 10255204), (40, 5127602), (80, 2563801), (131, 1565680), (262, 782840), (524, 391420), (655, 313136), (1048, 195710), (1310, 156568), (2096, 97855), (2620, 78284), (5240, 39142), (10480, 19571)]