20651864

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{797}}^1$

素因数の和:923

約数の個数: 32

約数和(自身を含む): 40219200

約数和(自身を除く): 19567336

約数列:

[1, 2, 4, 8, 41, 79, 82, 158, 164, 316, 328, 632, 797, 1594, 3188, 3239, 6376, 6478, 12956, 25912, 32677, 62963, 65354, 125926, 130708, 251852, 261416, 503704, 2581483, 5162966, 10325932, 20651864]

約数ペア:

[(1, 20651864), (2, 10325932), (4, 5162966), (8, 2581483), (41, 503704), (79, 261416), (82, 251852), (158, 130708), (164, 125926), (316, 65354), (328, 62963), (632, 32677), (797, 25912), (1594, 12956), (3188, 6478), (3239, 6376)]