20879565

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{6857}}^1$

素因数の和:6901

約数の個数: 32

約数和(自身を含む): 39502080

約数和(自身を除く): 18622515

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 87, 105, 145, 203, 435, 609, 1015, 3045, 6857, 20571, 34285, 47999, 102855, 143997, 198853, 239995, 596559, 719985, 994265, 1391971, 2982795, 4175913, 6959855, 20879565]

約数ペア:

[(1, 20879565), (3, 6959855), (5, 4175913), (7, 2982795), (15, 1391971), (21, 994265), (29, 719985), (35, 596559), (87, 239995), (105, 198853), (145, 143997), (203, 102855), (435, 47999), (609, 34285), (1015, 20571), (3045, 6857)]