21611970

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{547}}^1$

素因数の和:999

約数の個数: 48

約数和(自身を含む): 56422080

約数和(自身を除く): 34810110

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 439, 547, 878, 1094, 1317, 1641, 2195, 2634, 2735, 3282, 3951, 4390, 4923, 5470, 6585, 7902, 8205, 9846, 13170, 16410, 19755, 24615, 39510, 49230, 240133, 480266, 720399, 1200665, 1440798, 2161197, 2401330, 3601995, 4322394, 7203990, 10805985, 21611970]

約数ペア:

[(1, 21611970), (2, 10805985), (3, 7203990), (5, 4322394), (6, 3601995), (9, 2401330), (10, 2161197), (15, 1440798), (18, 1200665), (30, 720399), (45, 480266), (90, 240133), (439, 49230), (547, 39510), (878, 24615), (1094, 19755), (1317, 16410), (1641, 13170), (2195, 9846), (2634, 8205), (2735, 7902), (3282, 6585), (3951, 5470), (4390, 4923)]