2197780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:208

約数の個数: 48

約数和(自身を含む): 5080320

約数和(自身を除く): 2882540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 107, 130, 158, 214, 260, 316, 395, 428, 535, 790, 1027, 1070, 1391, 1580, 2054, 2140, 2782, 4108, 5135, 5564, 6955, 8453, 10270, 13910, 16906, 20540, 27820, 33812, 42265, 84530, 109889, 169060, 219778, 439556, 549445, 1098890, 2197780]

約数ペア:

[(1, 2197780), (2, 1098890), (4, 549445), (5, 439556), (10, 219778), (13, 169060), (20, 109889), (26, 84530), (52, 42265), (65, 33812), (79, 27820), (107, 20540), (130, 16906), (158, 13910), (214, 10270), (260, 8453), (316, 6955), (395, 5564), (428, 5135), (535, 4108), (790, 2782), (1027, 2140), (1070, 2054), (1391, 1580)]