21205224

素因数分解:

$2^3\times 3^2\times {\mathrm{311}}^1\times {\mathrm{947}}^1$

素因数の和:1270

約数の個数: 48

約数和(自身を含む): 57676320

約数和(自身を除く): 36471096

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 311, 622, 933, 947, 1244, 1866, 1894, 2488, 2799, 2841, 3732, 3788, 5598, 5682, 7464, 7576, 8523, 11196, 11364, 17046, 22392, 22728, 34092, 68184, 294517, 589034, 883551, 1178068, 1767102, 2356136, 2650653, 3534204, 5301306, 7068408, 10602612, 21205224]

約数ペア:

[(1, 21205224), (2, 10602612), (3, 7068408), (4, 5301306), (6, 3534204), (8, 2650653), (9, 2356136), (12, 1767102), (18, 1178068), (24, 883551), (36, 589034), (72, 294517), (311, 68184), (622, 34092), (933, 22728), (947, 22392), (1244, 17046), (1866, 11364), (1894, 11196), (2488, 8523), (2799, 7576), (2841, 7464), (3732, 5682), (3788, 5598)]