1807780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1$

素因数の和:448

約数の個数: 48

約数和(自身を含む): 4339440

約数和(自身を除く): 2531660

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 409, 442, 818, 884, 1105, 1636, 2045, 2210, 4090, 4420, 5317, 6953, 8180, 10634, 13906, 21268, 26585, 27812, 34765, 53170, 69530, 90389, 106340, 139060, 180778, 361556, 451945, 903890, 1807780]

約数ペア:

[(1, 1807780), (2, 903890), (4, 451945), (5, 361556), (10, 180778), (13, 139060), (17, 106340), (20, 90389), (26, 69530), (34, 53170), (52, 34765), (65, 27812), (68, 26585), (85, 21268), (130, 13906), (170, 10634), (221, 8180), (260, 6953), (340, 5317), (409, 4420), (442, 4090), (818, 2210), (884, 2045), (1105, 1636)]