21833680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{577}}^1$

素因数の和:644

約数の個数: 80

約数和(自身を含む): 56764224

約数和(自身を除く): 34930544

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 43, 44, 55, 80, 86, 88, 110, 172, 176, 215, 220, 344, 430, 440, 473, 577, 688, 860, 880, 946, 1154, 1720, 1892, 2308, 2365, 2885, 3440, 3784, 4616, 4730, 5770, 6347, 7568, 9232, 9460, 11540, 12694, 18920, 23080, 24811, 25388, 31735, 37840, 46160, 49622, 50776, 63470, 99244, 101552, 124055, 126940, 198488, 248110, 253880, 272921, 396976, 496220, 507760, 545842, 992440, 1091684, 1364605, 1984880, 2183368, 2729210, 4366736, 5458420, 10916840, 21833680]

約数ペア:

[(1, 21833680), (2, 10916840), (4, 5458420), (5, 4366736), (8, 2729210), (10, 2183368), (11, 1984880), (16, 1364605), (20, 1091684), (22, 992440), (40, 545842), (43, 507760), (44, 496220), (55, 396976), (80, 272921), (86, 253880), (88, 248110), (110, 198488), (172, 126940), (176, 124055), (215, 101552), (220, 99244), (344, 63470), (430, 50776), (440, 49622), (473, 46160), (577, 37840), (688, 31735), (860, 25388), (880, 24811), (946, 23080), (1154, 18920), (1720, 12694), (1892, 11540), (2308, 9460), (2365, 9232), (2885, 7568), (3440, 6347), (3784, 5770), (4616, 4730)]