1287780

素因数分解:

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

素因数の和:165

約数の個数: 72

約数和(自身を含む): 3935232

約数和(自身を除く): 2647452

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 127, 130, 156, 169, 195, 254, 260, 338, 381, 390, 507, 508, 635, 676, 762, 780, 845, 1014, 1270, 1524, 1651, 1690, 1905, 2028, 2535, 2540, 3302, 3380, 3810, 4953, 5070, 6604, 7620, 8255, 9906, 10140, 16510, 19812, 21463, 24765, 33020, 42926, 49530, 64389, 85852, 99060, 107315, 128778, 214630, 257556, 321945, 429260, 643890, 1287780]

約数ペア:

[(1, 1287780), (2, 643890), (3, 429260), (4, 321945), (5, 257556), (6, 214630), (10, 128778), (12, 107315), (13, 99060), (15, 85852), (20, 64389), (26, 49530), (30, 42926), (39, 33020), (52, 24765), (60, 21463), (65, 19812), (78, 16510), (127, 10140), (130, 9906), (156, 8255), (169, 7620), (195, 6604), (254, 5070), (260, 4953), (338, 3810), (381, 3380), (390, 3302), (507, 2540), (508, 2535), (635, 2028), (676, 1905), (762, 1690), (780, 1651), (845, 1524), (1014, 1270)]