21459720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{178831}}^1$

素因数の和:178845

約数の個数: 32

約数和(自身を含む): 64379520

約数和(自身を除く): 42919800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 178831, 357662, 536493, 715324, 894155, 1072986, 1430648, 1788310, 2145972, 2682465, 3576620, 4291944, 5364930, 7153240, 10729860, 21459720]

約数ペア:

[(1, 21459720), (2, 10729860), (3, 7153240), (4, 5364930), (5, 4291944), (6, 3576620), (8, 2682465), (10, 2145972), (12, 1788310), (15, 1430648), (20, 1072986), (24, 894155), (30, 715324), (40, 536493), (60, 357662), (120, 178831)]