19996574975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{2309}}^1\times {\mathrm{26647}}^1$

素因数の和:28979

約数の個数: 24

約数和(自身を含む): 26715685920

約数和(自身を除く): 6719110945

約数列:

[1, 5, 13, 25, 65, 325, 2309, 11545, 26647, 30017, 57725, 133235, 150085, 346411, 666175, 750425, 1732055, 8660275, 61527923, 307639615, 799862999, 1538198075, 3999314995, 19996574975]

約数ペア:

[(1, 19996574975), (5, 3999314995), (13, 1538198075), (25, 799862999), (65, 307639615), (325, 61527923), (2309, 8660275), (11545, 1732055), (26647, 750425), (30017, 666175), (57725, 346411), (133235, 150085)]