8043640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{181}}^1$

素因数の和:304

約数の個数: 64

約数和(自身を含む): 20049120

約数和(自身を除く): 12005480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 101, 110, 181, 202, 220, 362, 404, 440, 505, 724, 808, 905, 1010, 1111, 1448, 1810, 1991, 2020, 2222, 3620, 3982, 4040, 4444, 5555, 7240, 7964, 8888, 9955, 11110, 15928, 18281, 19910, 22220, 36562, 39820, 44440, 73124, 79640, 91405, 146248, 182810, 201091, 365620, 402182, 731240, 804364, 1005455, 1608728, 2010910, 4021820, 8043640]

約数ペア:

[(1, 8043640), (2, 4021820), (4, 2010910), (5, 1608728), (8, 1005455), (10, 804364), (11, 731240), (20, 402182), (22, 365620), (40, 201091), (44, 182810), (55, 146248), (88, 91405), (101, 79640), (110, 73124), (181, 44440), (202, 39820), (220, 36562), (362, 22220), (404, 19910), (440, 18281), (505, 15928), (724, 11110), (808, 9955), (905, 8888), (1010, 7964), (1111, 7240), (1448, 5555), (1810, 4444), (1991, 4040), (2020, 3982), (2222, 3620)]