20970352

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2459}}^1$

素因数の和:2521

約数の個数: 40

約数和(自身を含む): 44840880

約数和(自身を除く): 23870528

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 82, 104, 164, 208, 328, 533, 656, 1066, 2132, 2459, 4264, 4918, 8528, 9836, 19672, 31967, 39344, 63934, 100819, 127868, 201638, 255736, 403276, 511472, 806552, 1310647, 1613104, 2621294, 5242588, 10485176, 20970352]

約数ペア:

[(1, 20970352), (2, 10485176), (4, 5242588), (8, 2621294), (13, 1613104), (16, 1310647), (26, 806552), (41, 511472), (52, 403276), (82, 255736), (104, 201638), (164, 127868), (208, 100819), (328, 63934), (533, 39344), (656, 31967), (1066, 19672), (2132, 9836), (2459, 8528), (4264, 4918)]