643890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{127}}^1$

素因数の和:163

約数の個数: 48

約数和(自身を含む): 1686528

約数和(自身を除く): 1042638

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 127, 130, 169, 195, 254, 338, 381, 390, 507, 635, 762, 845, 1014, 1270, 1651, 1690, 1905, 2535, 3302, 3810, 4953, 5070, 8255, 9906, 16510, 21463, 24765, 42926, 49530, 64389, 107315, 128778, 214630, 321945, 643890]

約数ペア:

[(1, 643890), (2, 321945), (3, 214630), (5, 128778), (6, 107315), (10, 64389), (13, 49530), (15, 42926), (26, 24765), (30, 21463), (39, 16510), (65, 9906), (78, 8255), (127, 5070), (130, 4953), (169, 3810), (195, 3302), (254, 2535), (338, 1905), (381, 1690), (390, 1651), (507, 1270), (635, 1014), (762, 845)]