20689136

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5851}}^1$

素因数の和:5889

約数の個数: 40

約数和(自身を含む): 45715824

約数和(自身を除く): 25026688

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 208, 221, 272, 442, 884, 1768, 3536, 5851, 11702, 23404, 46808, 76063, 93616, 99467, 152126, 198934, 304252, 397868, 608504, 795736, 1217008, 1293071, 1591472, 2586142, 5172284, 10344568, 20689136]

約数ペア:

[(1, 20689136), (2, 10344568), (4, 5172284), (8, 2586142), (13, 1591472), (16, 1293071), (17, 1217008), (26, 795736), (34, 608504), (52, 397868), (68, 304252), (104, 198934), (136, 152126), (208, 99467), (221, 93616), (272, 76063), (442, 46808), (884, 23404), (1768, 11702), (3536, 5851)]