8857640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:554

約数の個数: 64

約数和(自身を含む): 22317120

約数和(自身を除く): 13459480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 110, 164, 205, 220, 328, 410, 440, 451, 491, 820, 902, 982, 1640, 1804, 1964, 2255, 2455, 3608, 3928, 4510, 4910, 5401, 9020, 9820, 10802, 18040, 19640, 20131, 21604, 27005, 40262, 43208, 54010, 80524, 100655, 108020, 161048, 201310, 216040, 221441, 402620, 442882, 805240, 885764, 1107205, 1771528, 2214410, 4428820, 8857640]

約数ペア:

[(1, 8857640), (2, 4428820), (4, 2214410), (5, 1771528), (8, 1107205), (10, 885764), (11, 805240), (20, 442882), (22, 402620), (40, 221441), (41, 216040), (44, 201310), (55, 161048), (82, 108020), (88, 100655), (110, 80524), (164, 54010), (205, 43208), (220, 40262), (328, 27005), (410, 21604), (440, 20131), (451, 19640), (491, 18040), (820, 10802), (902, 9820), (982, 9020), (1640, 5401), (1804, 4910), (1964, 4510), (2255, 3928), (2455, 3608)]