16278640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{709}}^1$

素因数の和:770

約数の個数: 80

約数和(自身を含む): 44372160

約数和(自身を除く): 28093520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 56, 70, 80, 82, 112, 140, 164, 205, 280, 287, 328, 410, 560, 574, 656, 709, 820, 1148, 1418, 1435, 1640, 2296, 2836, 2870, 3280, 3545, 4592, 4963, 5672, 5740, 7090, 9926, 11344, 11480, 14180, 19852, 22960, 24815, 28360, 29069, 39704, 49630, 56720, 58138, 79408, 99260, 116276, 145345, 198520, 203483, 232552, 290690, 397040, 406966, 465104, 581380, 813932, 1017415, 1162760, 1627864, 2034830, 2325520, 3255728, 4069660, 8139320, 16278640]

約数ペア:

[(1, 16278640), (2, 8139320), (4, 4069660), (5, 3255728), (7, 2325520), (8, 2034830), (10, 1627864), (14, 1162760), (16, 1017415), (20, 813932), (28, 581380), (35, 465104), (40, 406966), (41, 397040), (56, 290690), (70, 232552), (80, 203483), (82, 198520), (112, 145345), (140, 116276), (164, 99260), (205, 79408), (280, 58138), (287, 56720), (328, 49630), (410, 39704), (560, 29069), (574, 28360), (656, 24815), (709, 22960), (820, 19852), (1148, 14180), (1418, 11480), (1435, 11344), (1640, 9926), (2296, 7090), (2836, 5740), (2870, 5672), (3280, 4963), (3545, 4592)]