18459688

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1$

素因数の和:286

約数の個数: 64

約数和(自身を含む): 40415760

約数和(自身を除く): 21956072

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 53, 68, 104, 106, 136, 197, 212, 221, 394, 424, 442, 689, 788, 884, 901, 1378, 1576, 1768, 1802, 2561, 2756, 3349, 3604, 5122, 5512, 6698, 7208, 10244, 10441, 11713, 13396, 20488, 20882, 23426, 26792, 41764, 43537, 46852, 83528, 87074, 93704, 135733, 174148, 177497, 271466, 348296, 354994, 542932, 709988, 1085864, 1419976, 2307461, 4614922, 9229844, 18459688]

約数ペア:

[(1, 18459688), (2, 9229844), (4, 4614922), (8, 2307461), (13, 1419976), (17, 1085864), (26, 709988), (34, 542932), (52, 354994), (53, 348296), (68, 271466), (104, 177497), (106, 174148), (136, 135733), (197, 93704), (212, 87074), (221, 83528), (394, 46852), (424, 43537), (442, 41764), (689, 26792), (788, 23426), (884, 20882), (901, 20488), (1378, 13396), (1576, 11713), (1768, 10441), (1802, 10244), (2561, 7208), (2756, 6698), (3349, 5512), (3604, 5122)]