13151920

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2081}}^1$

素因数の和:2173

約数の個数: 40

約数和(自身を含む): 30980160

約数和(自身を除く): 17828240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 2081, 3160, 4162, 6320, 8324, 10405, 16648, 20810, 33296, 41620, 83240, 164399, 166480, 328798, 657596, 821995, 1315192, 1643990, 2630384, 3287980, 6575960, 13151920]

約数ペア:

[(1, 13151920), (2, 6575960), (4, 3287980), (5, 2630384), (8, 1643990), (10, 1315192), (16, 821995), (20, 657596), (40, 328798), (79, 166480), (80, 164399), (158, 83240), (316, 41620), (395, 33296), (632, 20810), (790, 16648), (1264, 10405), (1580, 8324), (2081, 6320), (3160, 4162)]