291228860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{691}}^1\times {\mathrm{1621}}^1$

素因数の和:2334

約数の個数: 48

約数和(自身を含む): 659985312

約数和(自身を除く): 368756452

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 691, 1382, 1621, 2764, 3242, 3455, 6484, 6910, 8105, 8983, 13820, 16210, 17966, 21073, 32420, 35932, 42146, 44915, 84292, 89830, 105365, 179660, 210730, 421460, 1120111, 2240222, 4480444, 5600555, 11201110, 14561443, 22402220, 29122886, 58245772, 72807215, 145614430, 291228860]

約数ペア:

[(1, 291228860), (2, 145614430), (4, 72807215), (5, 58245772), (10, 29122886), (13, 22402220), (20, 14561443), (26, 11201110), (52, 5600555), (65, 4480444), (130, 2240222), (260, 1120111), (691, 421460), (1382, 210730), (1621, 179660), (2764, 105365), (3242, 89830), (3455, 84292), (6484, 44915), (6910, 42146), (8105, 35932), (8983, 32420), (13820, 21073), (16210, 17966)]