8139320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{709}}^1$

素因数の和:768

約数の個数: 64

約数和(自身を含む): 21470400

約数和(自身を除く): 13331080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 82, 140, 164, 205, 280, 287, 328, 410, 574, 709, 820, 1148, 1418, 1435, 1640, 2296, 2836, 2870, 3545, 4963, 5672, 5740, 7090, 9926, 11480, 14180, 19852, 24815, 28360, 29069, 39704, 49630, 58138, 99260, 116276, 145345, 198520, 203483, 232552, 290690, 406966, 581380, 813932, 1017415, 1162760, 1627864, 2034830, 4069660, 8139320]

約数ペア:

[(1, 8139320), (2, 4069660), (4, 2034830), (5, 1627864), (7, 1162760), (8, 1017415), (10, 813932), (14, 581380), (20, 406966), (28, 290690), (35, 232552), (40, 203483), (41, 198520), (56, 145345), (70, 116276), (82, 99260), (140, 58138), (164, 49630), (205, 39704), (280, 29069), (287, 28360), (328, 24815), (410, 19852), (574, 14180), (709, 11480), (820, 9926), (1148, 7090), (1418, 5740), (1435, 5672), (1640, 4963), (2296, 3545), (2836, 2870)]