80828020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{499}}^1$

素因数の和:617

約数の個数: 96

約数和(自身を含む): 211680000

約数和(自身を除く): 130851980

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 89, 91, 130, 140, 178, 182, 260, 356, 364, 445, 455, 499, 623, 890, 910, 998, 1157, 1246, 1780, 1820, 1996, 2314, 2492, 2495, 3115, 3493, 4628, 4990, 5785, 6230, 6487, 6986, 8099, 9980, 11570, 12460, 12974, 13972, 16198, 17465, 23140, 25948, 32396, 32435, 34930, 40495, 44411, 45409, 64870, 69860, 80990, 88822, 90818, 129740, 161980, 177644, 181636, 222055, 227045, 310877, 444110, 454090, 577343, 621754, 888220, 908180, 1154686, 1243508, 1554385, 2309372, 2886715, 3108770, 4041401, 5773430, 6217540, 8082802, 11546860, 16165604, 20207005, 40414010, 80828020]

約数ペア:

[(1, 80828020), (2, 40414010), (4, 20207005), (5, 16165604), (7, 11546860), (10, 8082802), (13, 6217540), (14, 5773430), (20, 4041401), (26, 3108770), (28, 2886715), (35, 2309372), (52, 1554385), (65, 1243508), (70, 1154686), (89, 908180), (91, 888220), (130, 621754), (140, 577343), (178, 454090), (182, 444110), (260, 310877), (356, 227045), (364, 222055), (445, 181636), (455, 177644), (499, 161980), (623, 129740), (890, 90818), (910, 88822), (998, 80990), (1157, 69860), (1246, 64870), (1780, 45409), (1820, 44411), (1996, 40495), (2314, 34930), (2492, 32435), (2495, 32396), (3115, 25948), (3493, 23140), (4628, 17465), (4990, 16198), (5785, 13972), (6230, 12974), (6487, 12460), (6986, 11570), (8099, 9980)]