21615528

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1997}}^1$

素因数の和:2058

約数の個数: 64

約数和(自身を含む): 60419520

約数和(自身を除く): 38803992

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 41, 44, 66, 82, 88, 123, 132, 164, 246, 264, 328, 451, 492, 902, 984, 1353, 1804, 1997, 2706, 3608, 3994, 5412, 5991, 7988, 10824, 11982, 15976, 21967, 23964, 43934, 47928, 65901, 81877, 87868, 131802, 163754, 175736, 245631, 263604, 327508, 491262, 527208, 655016, 900647, 982524, 1801294, 1965048, 2701941, 3602588, 5403882, 7205176, 10807764, 21615528]

約数ペア:

[(1, 21615528), (2, 10807764), (3, 7205176), (4, 5403882), (6, 3602588), (8, 2701941), (11, 1965048), (12, 1801294), (22, 982524), (24, 900647), (33, 655016), (41, 527208), (44, 491262), (66, 327508), (82, 263604), (88, 245631), (123, 175736), (132, 163754), (164, 131802), (246, 87868), (264, 81877), (328, 65901), (451, 47928), (492, 43934), (902, 23964), (984, 21967), (1353, 15976), (1804, 11982), (1997, 10824), (2706, 7988), (3608, 5991), (3994, 5412)]