64505020

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{20543}}^1$

素因数の和:20709

約数の個数: 24

約数和(自身を含む): 136329984

約数和(自身を除く): 71824964

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 20543, 41086, 82172, 102715, 205430, 410860, 3225251, 6450502, 12901004, 16126255, 32252510, 64505020]

約数ペア:

[(1, 64505020), (2, 32252510), (4, 16126255), (5, 12901004), (10, 6450502), (20, 3225251), (157, 410860), (314, 205430), (628, 102715), (785, 82172), (1570, 41086), (3140, 20543)]