21403890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{237821}}^1$

素因数の和:237834

約数の個数: 24

約数和(自身を含む): 55650348

約数和(自身を除く): 34246458

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 237821, 475642, 713463, 1189105, 1426926, 2140389, 2378210, 3567315, 4280778, 7134630, 10701945, 21403890]

約数ペア:

[(1, 21403890), (2, 10701945), (3, 7134630), (5, 4280778), (6, 3567315), (9, 2378210), (10, 2140389), (15, 1426926), (18, 1189105), (30, 713463), (45, 475642), (90, 237821)]