17956840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1103}}^1$

素因数の和:1162

約数の個数: 64

約数和(自身を含む): 45308160

約数和(自身を除く): 27351320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 37, 40, 44, 55, 74, 88, 110, 148, 185, 220, 296, 370, 407, 440, 740, 814, 1103, 1480, 1628, 2035, 2206, 3256, 4070, 4412, 5515, 8140, 8824, 11030, 12133, 16280, 22060, 24266, 40811, 44120, 48532, 60665, 81622, 97064, 121330, 163244, 204055, 242660, 326488, 408110, 448921, 485320, 816220, 897842, 1632440, 1795684, 2244605, 3591368, 4489210, 8978420, 17956840]

約数ペア:

[(1, 17956840), (2, 8978420), (4, 4489210), (5, 3591368), (8, 2244605), (10, 1795684), (11, 1632440), (20, 897842), (22, 816220), (37, 485320), (40, 448921), (44, 408110), (55, 326488), (74, 242660), (88, 204055), (110, 163244), (148, 121330), (185, 97064), (220, 81622), (296, 60665), (370, 48532), (407, 44120), (440, 40811), (740, 24266), (814, 22060), (1103, 16280), (1480, 12133), (1628, 11030), (2035, 8824), (2206, 8140), (3256, 5515), (4070, 4412)]