21286575

素因数分解:

$3^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{1063}}^1$

素因数の和:1168

約数の個数: 36

約数和(自身を含む): 38591280

約数和(自身を除く): 17304705

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 89, 225, 267, 445, 801, 1063, 1335, 2225, 3189, 4005, 5315, 6675, 9567, 15945, 20025, 26575, 47835, 79725, 94607, 239175, 283821, 473035, 851463, 1419105, 2365175, 4257315, 7095525, 21286575]

約数ペア:

[(1, 21286575), (3, 7095525), (5, 4257315), (9, 2365175), (15, 1419105), (25, 851463), (45, 473035), (75, 283821), (89, 239175), (225, 94607), (267, 79725), (445, 47835), (801, 26575), (1063, 20025), (1335, 15945), (2225, 9567), (3189, 6675), (4005, 5315)]