20261385

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{283}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 37038144

約数和(自身を除く): 16776759

約数列:

[1, 3, 5, 9, 15, 37, 43, 45, 111, 129, 185, 215, 283, 333, 387, 555, 645, 849, 1415, 1591, 1665, 1935, 2547, 4245, 4773, 7955, 10471, 12169, 12735, 14319, 23865, 31413, 36507, 52355, 60845, 71595, 94239, 109521, 157065, 182535, 450253, 471195, 547605, 1350759, 2251265, 4052277, 6753795, 20261385]

約数ペア:

[(1, 20261385), (3, 6753795), (5, 4052277), (9, 2251265), (15, 1350759), (37, 547605), (43, 471195), (45, 450253), (111, 182535), (129, 157065), (185, 109521), (215, 94239), (283, 71595), (333, 60845), (387, 52355), (555, 36507), (645, 31413), (849, 23865), (1415, 14319), (1591, 12735), (1665, 12169), (1935, 10471), (2547, 7955), (4245, 4773)]