18170680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{677}}^1$

素因数の和:760

約数の個数: 64

約数和(自身を含む): 45398880

約数和(自身を除く): 27228200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 88, 110, 122, 220, 244, 305, 440, 488, 610, 671, 677, 1220, 1342, 1354, 2440, 2684, 2708, 3355, 3385, 5368, 5416, 6710, 6770, 7447, 13420, 13540, 14894, 26840, 27080, 29788, 37235, 41297, 59576, 74470, 82594, 148940, 165188, 206485, 297880, 330376, 412970, 454267, 825940, 908534, 1651880, 1817068, 2271335, 3634136, 4542670, 9085340, 18170680]

約数ペア:

[(1, 18170680), (2, 9085340), (4, 4542670), (5, 3634136), (8, 2271335), (10, 1817068), (11, 1651880), (20, 908534), (22, 825940), (40, 454267), (44, 412970), (55, 330376), (61, 297880), (88, 206485), (110, 165188), (122, 148940), (220, 82594), (244, 74470), (305, 59576), (440, 41297), (488, 37235), (610, 29788), (671, 27080), (677, 26840), (1220, 14894), (1342, 13540), (1354, 13420), (2440, 7447), (2684, 6770), (2708, 6710), (3355, 5416), (3385, 5368)]