20127225

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{79}}^2$

素因数の和:214

約数の個数: 36

約数和(自身を含む): 34487376

約数和(自身を除く): 14360151

約数列:

[1, 3, 5, 15, 25, 43, 75, 79, 129, 215, 237, 395, 645, 1075, 1185, 1975, 3225, 3397, 5925, 6241, 10191, 16985, 18723, 31205, 50955, 84925, 93615, 156025, 254775, 268363, 468075, 805089, 1341815, 4025445, 6709075, 20127225]

約数ペア:

[(1, 20127225), (3, 6709075), (5, 4025445), (15, 1341815), (25, 805089), (43, 468075), (75, 268363), (79, 254775), (129, 156025), (215, 93615), (237, 84925), (395, 50955), (645, 31205), (1075, 18723), (1185, 16985), (1975, 10191), (3225, 6241), (3397, 5925)]