20449775

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:403

約数の個数: 24

約数和(自身を含む): 26435808

約数和(自身を除く): 5986033

約数列:

[1, 5, 25, 41, 71, 205, 281, 355, 1025, 1405, 1775, 2911, 7025, 11521, 14555, 19951, 57605, 72775, 99755, 288025, 498775, 817991, 4089955, 20449775]

約数ペア:

[(1, 20449775), (5, 4089955), (25, 817991), (41, 498775), (71, 288025), (205, 99755), (281, 72775), (355, 57605), (1025, 19951), (1405, 14555), (1775, 11521), (2911, 7025)]