87111220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{863}}^1$

素因数の和:989

約数の個数: 72

約数和(自身を含む): 215115264

約数和(自身を除く): 128004044

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 103, 140, 196, 206, 245, 412, 490, 515, 721, 863, 980, 1030, 1442, 1726, 2060, 2884, 3452, 3605, 4315, 5047, 6041, 7210, 8630, 10094, 12082, 14420, 17260, 20188, 24164, 25235, 30205, 42287, 50470, 60410, 84574, 88889, 100940, 120820, 169148, 177778, 211435, 355556, 422870, 444445, 622223, 845740, 888890, 1244446, 1777780, 2488892, 3111115, 4355561, 6222230, 8711122, 12444460, 17422244, 21777805, 43555610, 87111220]

約数ペア:

[(1, 87111220), (2, 43555610), (4, 21777805), (5, 17422244), (7, 12444460), (10, 8711122), (14, 6222230), (20, 4355561), (28, 3111115), (35, 2488892), (49, 1777780), (70, 1244446), (98, 888890), (103, 845740), (140, 622223), (196, 444445), (206, 422870), (245, 355556), (412, 211435), (490, 177778), (515, 169148), (721, 120820), (863, 100940), (980, 88889), (1030, 84574), (1442, 60410), (1726, 50470), (2060, 42287), (2884, 30205), (3452, 25235), (3605, 24164), (4315, 20188), (5047, 17260), (6041, 14420), (7210, 12082), (8630, 10094)]