7968760

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:208

約数の個数: 64

約数和(自身を含む): 18960480

約数和(自身を除く): 10991720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 43, 82, 86, 113, 164, 172, 205, 215, 226, 328, 344, 410, 430, 452, 565, 820, 860, 904, 1130, 1640, 1720, 1763, 2260, 3526, 4520, 4633, 4859, 7052, 8815, 9266, 9718, 14104, 17630, 18532, 19436, 23165, 24295, 35260, 37064, 38872, 46330, 48590, 70520, 92660, 97180, 185320, 194360, 199219, 398438, 796876, 996095, 1593752, 1992190, 3984380, 7968760]

約数ペア:

[(1, 7968760), (2, 3984380), (4, 1992190), (5, 1593752), (8, 996095), (10, 796876), (20, 398438), (40, 199219), (41, 194360), (43, 185320), (82, 97180), (86, 92660), (113, 70520), (164, 48590), (172, 46330), (205, 38872), (215, 37064), (226, 35260), (328, 24295), (344, 23165), (410, 19436), (430, 18532), (452, 17630), (565, 14104), (820, 9718), (860, 9266), (904, 8815), (1130, 7052), (1640, 4859), (1720, 4633), (1763, 4520), (2260, 3526)]