20400945

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{601}}^1$

素因数の和:713

約数の個数: 32

約数和(自身を含む): 34212864

約数和(自身を除く): 13811919

約数列:

[1, 3, 5, 15, 31, 73, 93, 155, 219, 365, 465, 601, 1095, 1803, 2263, 3005, 6789, 9015, 11315, 18631, 33945, 43873, 55893, 93155, 131619, 219365, 279465, 658095, 1360063, 4080189, 6800315, 20400945]

約数ペア:

[(1, 20400945), (3, 6800315), (5, 4080189), (15, 1360063), (31, 658095), (73, 279465), (93, 219365), (155, 131619), (219, 93155), (365, 55893), (465, 43873), (601, 33945), (1095, 18631), (1803, 11315), (2263, 9015), (3005, 6789)]