20629856

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{491}}^1$

素因数の和:615

約数の個数: 48

約数和(自身を含む): 44262288

約数和(自身を除く): 23632432

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 101, 104, 202, 208, 404, 416, 491, 808, 982, 1313, 1616, 1964, 2626, 3232, 3928, 5252, 6383, 7856, 10504, 12766, 15712, 21008, 25532, 42016, 49591, 51064, 99182, 102128, 198364, 204256, 396728, 644683, 793456, 1289366, 1586912, 2578732, 5157464, 10314928, 20629856]

約数ペア:

[(1, 20629856), (2, 10314928), (4, 5157464), (8, 2578732), (13, 1586912), (16, 1289366), (26, 793456), (32, 644683), (52, 396728), (101, 204256), (104, 198364), (202, 102128), (208, 99182), (404, 51064), (416, 49591), (491, 42016), (808, 25532), (982, 21008), (1313, 15712), (1616, 12766), (1964, 10504), (2626, 7856), (3232, 6383), (3928, 5252)]