81959380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{1249}}^1$

素因数の和:1468

約数の個数: 48

約数和(自身を含む): 183330000

約数和(自身を除く): 101370620

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 193, 340, 386, 772, 965, 1249, 1930, 2498, 3281, 3860, 4996, 6245, 6562, 12490, 13124, 16405, 21233, 24980, 32810, 42466, 65620, 84932, 106165, 212330, 241057, 424660, 482114, 964228, 1205285, 2410570, 4097969, 4821140, 8195938, 16391876, 20489845, 40979690, 81959380]

約数ペア:

[(1, 81959380), (2, 40979690), (4, 20489845), (5, 16391876), (10, 8195938), (17, 4821140), (20, 4097969), (34, 2410570), (68, 1205285), (85, 964228), (170, 482114), (193, 424660), (340, 241057), (386, 212330), (772, 106165), (965, 84932), (1249, 65620), (1930, 42466), (2498, 32810), (3281, 24980), (3860, 21233), (4996, 16405), (6245, 13124), (6562, 12490)]