21717855

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8467}}^1$

素因数の和:8500

約数の個数: 32

約数和(自身を含む): 40646400

約数和(自身を除く): 18928545

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 513, 855, 2565, 8467, 25401, 42335, 76203, 127005, 160873, 228609, 381015, 482619, 804365, 1143045, 1447857, 2413095, 4343571, 7239285, 21717855]

約数ペア:

[(1, 21717855), (3, 7239285), (5, 4343571), (9, 2413095), (15, 1447857), (19, 1143045), (27, 804365), (45, 482619), (57, 381015), (95, 228609), (135, 160873), (171, 127005), (285, 76203), (513, 42335), (855, 25401), (2565, 8467)]