20520285

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{809}}^1$

素因数の和:925

約数の個数: 32

約数和(自身を含む): 34992000

約数和(自身を除く): 14471715

約数列:

[1, 3, 5, 15, 19, 57, 89, 95, 267, 285, 445, 809, 1335, 1691, 2427, 4045, 5073, 8455, 12135, 15371, 25365, 46113, 72001, 76855, 216003, 230565, 360005, 1080015, 1368019, 4104057, 6840095, 20520285]

約数ペア:

[(1, 20520285), (3, 6840095), (5, 4104057), (15, 1368019), (19, 1080015), (57, 360005), (89, 230565), (95, 216003), (267, 76855), (285, 72001), (445, 46113), (809, 25365), (1335, 15371), (1691, 12135), (2427, 8455), (4045, 5073)]