18408910

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1$

素因数の和:325

約数の個数: 64

約数和(自身を含む): 39009600

約数和(自身を除く): 20600690

約数列:

[1, 2, 5, 10, 13, 19, 26, 29, 38, 58, 65, 95, 130, 145, 190, 247, 257, 290, 377, 494, 514, 551, 754, 1102, 1235, 1285, 1885, 2470, 2570, 2755, 3341, 3770, 4883, 5510, 6682, 7163, 7453, 9766, 14326, 14906, 16705, 24415, 33410, 35815, 37265, 48830, 63479, 71630, 74530, 96889, 126958, 141607, 193778, 283214, 317395, 484445, 634790, 708035, 968890, 1416070, 1840891, 3681782, 9204455, 18408910]

約数ペア:

[(1, 18408910), (2, 9204455), (5, 3681782), (10, 1840891), (13, 1416070), (19, 968890), (26, 708035), (29, 634790), (38, 484445), (58, 317395), (65, 283214), (95, 193778), (130, 141607), (145, 126958), (190, 96889), (247, 74530), (257, 71630), (290, 63479), (377, 48830), (494, 37265), (514, 35815), (551, 33410), (754, 24415), (1102, 16705), (1235, 14906), (1285, 14326), (1885, 9766), (2470, 7453), (2570, 7163), (2755, 6682), (3341, 5510), (3770, 4883)]