31220235

素因数分解:

$3^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{491}}^1$

素因数の和:665

約数の個数: 40

約数和(自身を含む): 56436336

約数和(自身を除く): 25216101

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 157, 405, 471, 491, 785, 1413, 1473, 2355, 2455, 4239, 4419, 7065, 7365, 12717, 13257, 21195, 22095, 39771, 63585, 66285, 77087, 198855, 231261, 385435, 693783, 1156305, 2081349, 3468915, 6244047, 10406745, 31220235]

約数ペア:

[(1, 31220235), (3, 10406745), (5, 6244047), (9, 3468915), (15, 2081349), (27, 1156305), (45, 693783), (81, 385435), (135, 231261), (157, 198855), (405, 77087), (471, 66285), (491, 63585), (785, 39771), (1413, 22095), (1473, 21195), (2355, 13257), (2455, 12717), (4239, 7365), (4419, 7065)]