20405346

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1997}}^1$

素因数の和:2146

約数の個数: 32

約数和(自身を含む): 44307648

約数和(自身を除く): 23902302

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 131, 262, 393, 786, 1703, 1997, 3406, 3994, 5109, 5991, 10218, 11982, 25961, 51922, 77883, 155766, 261607, 523214, 784821, 1569642, 3400891, 6801782, 10202673, 20405346]

約数ペア:

[(1, 20405346), (2, 10202673), (3, 6801782), (6, 3400891), (13, 1569642), (26, 784821), (39, 523214), (78, 261607), (131, 155766), (262, 77883), (393, 51922), (786, 25961), (1703, 11982), (1997, 10218), (3406, 5991), (3994, 5109)]