19900575

素因数分解:

$3^2\times 5^2\times {\mathrm{241}}^1\times {\mathrm{367}}^1$

素因数の和:624

約数の個数: 36

約数和(自身を含む): 35889568

約数和(自身を除く): 15988993

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 241, 367, 723, 1101, 1205, 1835, 2169, 3303, 3615, 5505, 6025, 9175, 10845, 16515, 18075, 27525, 54225, 82575, 88447, 265341, 442235, 796023, 1326705, 2211175, 3980115, 6633525, 19900575]

約数ペア:

[(1, 19900575), (3, 6633525), (5, 3980115), (9, 2211175), (15, 1326705), (25, 796023), (45, 442235), (75, 265341), (225, 88447), (241, 82575), (367, 54225), (723, 27525), (1101, 18075), (1205, 16515), (1835, 10845), (2169, 9175), (3303, 6025), (3615, 5505)]