20328464

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5749}}^1$

素因数の和:5787

約数の個数: 40

約数和(自身を含む): 44919000

約数和(自身を除く): 24590536

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 208, 221, 272, 442, 884, 1768, 3536, 5749, 11498, 22996, 45992, 74737, 91984, 97733, 149474, 195466, 298948, 390932, 597896, 781864, 1195792, 1270529, 1563728, 2541058, 5082116, 10164232, 20328464]

約数ペア:

[(1, 20328464), (2, 10164232), (4, 5082116), (8, 2541058), (13, 1563728), (16, 1270529), (17, 1195792), (26, 781864), (34, 597896), (52, 390932), (68, 298948), (104, 195466), (136, 149474), (208, 97733), (221, 91984), (272, 74737), (442, 45992), (884, 22996), (1768, 11498), (3536, 5749)]