21086865

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8221}}^1$

素因数の和:8254

約数の個数: 32

約数和(自身を含む): 39465600

約数和(自身を除く): 18378735

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 513, 855, 2565, 8221, 24663, 41105, 73989, 123315, 156199, 221967, 369945, 468597, 780995, 1109835, 1405791, 2342985, 4217373, 7028955, 21086865]

約数ペア:

[(1, 21086865), (3, 7028955), (5, 4217373), (9, 2342985), (15, 1405791), (19, 1109835), (27, 780995), (45, 468597), (57, 369945), (95, 221967), (135, 156199), (171, 123315), (285, 73989), (513, 41105), (855, 24663), (2565, 8221)]