20210745

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{557}}^1$

素因数の和:665

約数の個数: 32

約数和(自身を含む): 33747840

約数和(自身を除く): 13537095

約数列:

[1, 3, 5, 15, 41, 59, 123, 177, 205, 295, 557, 615, 885, 1671, 2419, 2785, 7257, 8355, 12095, 22837, 32863, 36285, 68511, 98589, 114185, 164315, 342555, 492945, 1347383, 4042149, 6736915, 20210745]

約数ペア:

[(1, 20210745), (3, 6736915), (5, 4042149), (15, 1347383), (41, 492945), (59, 342555), (123, 164315), (177, 114185), (205, 98589), (295, 68511), (557, 36285), (615, 32863), (885, 22837), (1671, 12095), (2419, 8355), (2785, 7257)]