20556225

素因数分解:

$3^2\times 5^2\times {\mathrm{103}}^1\times {\mathrm{887}}^1$

素因数の和:1006

約数の個数: 36

約数和(自身を含む): 37217856

約数和(自身を除く): 16661631

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 103, 225, 309, 515, 887, 927, 1545, 2575, 2661, 4435, 4635, 7725, 7983, 13305, 22175, 23175, 39915, 66525, 91361, 199575, 274083, 456805, 822249, 1370415, 2284025, 4111245, 6852075, 20556225]

約数ペア:

[(1, 20556225), (3, 6852075), (5, 4111245), (9, 2284025), (15, 1370415), (25, 822249), (45, 456805), (75, 274083), (103, 199575), (225, 91361), (309, 66525), (515, 39915), (887, 23175), (927, 22175), (1545, 13305), (2575, 7983), (2661, 7725), (4435, 4635)]