21851528

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:198

約数の個数: 64

約数和(自身を含む): 46033920

約数和(自身を除く): 24182392

約数列:

[1, 2, 4, 8, 17, 31, 34, 62, 68, 71, 73, 124, 136, 142, 146, 248, 284, 292, 527, 568, 584, 1054, 1207, 1241, 2108, 2201, 2263, 2414, 2482, 4216, 4402, 4526, 4828, 4964, 5183, 8804, 9052, 9656, 9928, 10366, 17608, 18104, 20732, 37417, 38471, 41464, 74834, 76942, 88111, 149668, 153884, 160673, 176222, 299336, 307768, 321346, 352444, 642692, 704888, 1285384, 2731441, 5462882, 10925764, 21851528]

約数ペア:

[(1, 21851528), (2, 10925764), (4, 5462882), (8, 2731441), (17, 1285384), (31, 704888), (34, 642692), (62, 352444), (68, 321346), (71, 307768), (73, 299336), (124, 176222), (136, 160673), (142, 153884), (146, 149668), (248, 88111), (284, 76942), (292, 74834), (527, 41464), (568, 38471), (584, 37417), (1054, 20732), (1207, 18104), (1241, 17608), (2108, 10366), (2201, 9928), (2263, 9656), (2414, 9052), (2482, 8804), (4216, 5183), (4402, 4964), (4526, 4828)]