80421740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{599}}^1$

素因数の和:759

約数の個数: 72

約数和(自身を含む): 198223200

約数和(自身を除く): 117801460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 137, 140, 196, 245, 274, 490, 548, 599, 685, 959, 980, 1198, 1370, 1918, 2396, 2740, 2995, 3836, 4193, 4795, 5990, 6713, 8386, 9590, 11980, 13426, 16772, 19180, 20965, 26852, 29351, 33565, 41930, 58702, 67130, 82063, 83860, 117404, 134260, 146755, 164126, 293510, 328252, 410315, 574441, 587020, 820630, 1148882, 1641260, 2297764, 2872205, 4021087, 5744410, 8042174, 11488820, 16084348, 20105435, 40210870, 80421740]

約数ペア:

[(1, 80421740), (2, 40210870), (4, 20105435), (5, 16084348), (7, 11488820), (10, 8042174), (14, 5744410), (20, 4021087), (28, 2872205), (35, 2297764), (49, 1641260), (70, 1148882), (98, 820630), (137, 587020), (140, 574441), (196, 410315), (245, 328252), (274, 293510), (490, 164126), (548, 146755), (599, 134260), (685, 117404), (959, 83860), (980, 82063), (1198, 67130), (1370, 58702), (1918, 41930), (2396, 33565), (2740, 29351), (2995, 26852), (3836, 20965), (4193, 19180), (4795, 16772), (5990, 13426), (6713, 11980), (8386, 9590)]