51521540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2767}}^1$

素因数の和:2809

約数の個数: 72

約数和(自身を含む): 132531840

約数和(自身を除く): 81010300

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, 490, 532, 665, 931, 980, 1330, 1862, 2660, 2767, 3724, 4655, 5534, 9310, 11068, 13835, 18620, 19369, 27670, 38738, 52573, 55340, 77476, 96845, 105146, 135583, 193690, 210292, 262865, 271166, 368011, 387380, 525730, 542332, 677915, 736022, 1051460, 1355830, 1472044, 1840055, 2576077, 2711660, 3680110, 5152154, 7360220, 10304308, 12880385, 25760770, 51521540]

約数ペア:

[(1, 51521540), (2, 25760770), (4, 12880385), (5, 10304308), (7, 7360220), (10, 5152154), (14, 3680110), (19, 2711660), (20, 2576077), (28, 1840055), (35, 1472044), (38, 1355830), (49, 1051460), (70, 736022), (76, 677915), (95, 542332), (98, 525730), (133, 387380), (140, 368011), (190, 271166), (196, 262865), (245, 210292), (266, 193690), (380, 135583), (490, 105146), (532, 96845), (665, 77476), (931, 55340), (980, 52573), (1330, 38738), (1862, 27670), (2660, 19369), (2767, 18620), (3724, 13835), (4655, 11068), (5534, 9310)]