21213585

素因数分解:

$3^2\times 5^1\times {\mathrm{599}}^1\times {\mathrm{787}}^1$

素因数の和:1397

約数の個数: 24

約数和(自身を含む): 36878400

約数和(自身を除く): 15664815

約数列:

[1, 3, 5, 9, 15, 45, 599, 787, 1797, 2361, 2995, 3935, 5391, 7083, 8985, 11805, 26955, 35415, 471413, 1414239, 2357065, 4242717, 7071195, 21213585]

約数ペア:

[(1, 21213585), (3, 7071195), (5, 4242717), (9, 2357065), (15, 1414239), (45, 471413), (599, 35415), (787, 26955), (1797, 11805), (2361, 8985), (2995, 7083), (3935, 5391)]