20661368

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{281}}^1$

素因数の和:408

約数の個数: 64

約数和(自身を含む): 48323520

約数和(自身を除く): 27662152

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 101, 104, 182, 202, 281, 364, 404, 562, 707, 728, 808, 1124, 1313, 1414, 1967, 2248, 2626, 2828, 3653, 3934, 5252, 5656, 7306, 7868, 9191, 10504, 14612, 15736, 18382, 25571, 28381, 29224, 36764, 51142, 56762, 73528, 102284, 113524, 198667, 204568, 227048, 368953, 397334, 737906, 794668, 1475812, 1589336, 2582671, 2951624, 5165342, 10330684, 20661368]

約数ペア:

[(1, 20661368), (2, 10330684), (4, 5165342), (7, 2951624), (8, 2582671), (13, 1589336), (14, 1475812), (26, 794668), (28, 737906), (52, 397334), (56, 368953), (91, 227048), (101, 204568), (104, 198667), (182, 113524), (202, 102284), (281, 73528), (364, 56762), (404, 51142), (562, 36764), (707, 29224), (728, 28381), (808, 25571), (1124, 18382), (1313, 15736), (1414, 14612), (1967, 10504), (2248, 9191), (2626, 7868), (2828, 7306), (3653, 5656), (3934, 5252)]