31578820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17351}}^1$

素因数の和:17380

約数の個数: 48

約数和(自身を含む): 81623808

約数和(自身を除く): 50044988

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 17351, 34702, 69404, 86755, 121457, 173510, 225563, 242914, 347020, 451126, 485828, 607285, 902252, 1127815, 1214570, 1578941, 2255630, 2429140, 3157882, 4511260, 6315764, 7894705, 15789410, 31578820]

約数ペア:

[(1, 31578820), (2, 15789410), (4, 7894705), (5, 6315764), (7, 4511260), (10, 3157882), (13, 2429140), (14, 2255630), (20, 1578941), (26, 1214570), (28, 1127815), (35, 902252), (52, 607285), (65, 485828), (70, 451126), (91, 347020), (130, 242914), (140, 225563), (182, 173510), (260, 121457), (364, 86755), (455, 69404), (910, 34702), (1820, 17351)]