19806975

素因数分解:

$3^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{1873}}^1$

素因数の和:1936

約数の個数: 36

約数和(自身を含む): 36250656

約数和(自身を除く): 16443681

約数列:

[1, 3, 5, 9, 15, 25, 45, 47, 75, 141, 225, 235, 423, 705, 1175, 1873, 2115, 3525, 5619, 9365, 10575, 16857, 28095, 46825, 84285, 88031, 140475, 264093, 421425, 440155, 792279, 1320465, 2200775, 3961395, 6602325, 19806975]

約数ペア:

[(1, 19806975), (3, 6602325), (5, 3961395), (9, 2200775), (15, 1320465), (25, 792279), (45, 440155), (47, 421425), (75, 264093), (141, 140475), (225, 88031), (235, 84285), (423, 46825), (705, 28095), (1175, 16857), (1873, 10575), (2115, 9365), (3525, 5619)]