18900063

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{491}}^1$

素因数の和:564

約数の個数: 48

約数和(自身を含む): 34384896

約数和(自身を除く): 15484833

約数列:

[1, 3, 7, 9, 13, 21, 39, 47, 63, 91, 117, 141, 273, 329, 423, 491, 611, 819, 987, 1473, 1833, 2961, 3437, 4277, 4419, 5499, 6383, 10311, 12831, 19149, 23077, 30933, 38493, 44681, 57447, 69231, 134043, 161539, 207693, 300001, 402129, 484617, 900003, 1453851, 2100007, 2700009, 6300021, 18900063]

約数ペア:

[(1, 18900063), (3, 6300021), (7, 2700009), (9, 2100007), (13, 1453851), (21, 900003), (39, 484617), (47, 402129), (63, 300001), (91, 207693), (117, 161539), (141, 134043), (273, 69231), (329, 57447), (423, 44681), (491, 38493), (611, 30933), (819, 23077), (987, 19149), (1473, 12831), (1833, 10311), (2961, 6383), (3437, 5499), (4277, 4419)]