8025220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{431}}^1$

素因数の和:473

約数の個数: 72

約数和(自身を含む): 20684160

約数和(自身を除く): 12658940

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 431, 490, 532, 665, 862, 931, 980, 1330, 1724, 1862, 2155, 2660, 3017, 3724, 4310, 4655, 6034, 8189, 8620, 9310, 12068, 15085, 16378, 18620, 21119, 30170, 32756, 40945, 42238, 57323, 60340, 81890, 84476, 105595, 114646, 163780, 211190, 229292, 286615, 401261, 422380, 573230, 802522, 1146460, 1605044, 2006305, 4012610, 8025220]

約数ペア:

[(1, 8025220), (2, 4012610), (4, 2006305), (5, 1605044), (7, 1146460), (10, 802522), (14, 573230), (19, 422380), (20, 401261), (28, 286615), (35, 229292), (38, 211190), (49, 163780), (70, 114646), (76, 105595), (95, 84476), (98, 81890), (133, 60340), (140, 57323), (190, 42238), (196, 40945), (245, 32756), (266, 30170), (380, 21119), (431, 18620), (490, 16378), (532, 15085), (665, 12068), (862, 9310), (931, 8620), (980, 8189), (1330, 6034), (1724, 4655), (1862, 4310), (2155, 3724), (2660, 3017)]