21205890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{235621}}^1$

素因数の和:235634

約数の個数: 24

約数和(自身を含む): 55135548

約数和(自身を除く): 33929658

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 235621, 471242, 706863, 1178105, 1413726, 2120589, 2356210, 3534315, 4241178, 7068630, 10602945, 21205890]

約数ペア:

[(1, 21205890), (2, 10602945), (3, 7068630), (5, 4241178), (6, 3534315), (9, 2356210), (10, 2120589), (15, 1413726), (18, 1178105), (30, 706863), (45, 471242), (90, 235621)]