17968280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{421}}^1$

素因数の和:540

約数の個数: 64

約数和(自身を含む): 44664480

約数和(自身を除く): 26696200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 97, 110, 194, 220, 388, 421, 440, 485, 776, 842, 970, 1067, 1684, 1940, 2105, 2134, 3368, 3880, 4210, 4268, 4631, 5335, 8420, 8536, 9262, 10670, 16840, 18524, 21340, 23155, 37048, 40837, 42680, 46310, 81674, 92620, 163348, 185240, 204185, 326696, 408370, 449207, 816740, 898414, 1633480, 1796828, 2246035, 3593656, 4492070, 8984140, 17968280]

約数ペア:

[(1, 17968280), (2, 8984140), (4, 4492070), (5, 3593656), (8, 2246035), (10, 1796828), (11, 1633480), (20, 898414), (22, 816740), (40, 449207), (44, 408370), (55, 326696), (88, 204185), (97, 185240), (110, 163348), (194, 92620), (220, 81674), (388, 46310), (421, 42680), (440, 40837), (485, 37048), (776, 23155), (842, 21340), (970, 18524), (1067, 16840), (1684, 10670), (1940, 9262), (2105, 8536), (2134, 8420), (3368, 5335), (3880, 4631), (4210, 4268)]