19548280

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{1231}}^1$

素因数の和:1639

約数の個数: 32

約数和(自身を含む): 44130240

約数和(自身を除く): 24581960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1231, 1588, 1985, 2462, 3176, 3970, 4924, 6155, 7940, 9848, 12310, 15880, 24620, 49240, 488707, 977414, 1954828, 2443535, 3909656, 4887070, 9774140, 19548280]

約数ペア:

[(1, 19548280), (2, 9774140), (4, 4887070), (5, 3909656), (8, 2443535), (10, 1954828), (20, 977414), (40, 488707), (397, 49240), (794, 24620), (1231, 15880), (1588, 12310), (1985, 9848), (2462, 7940), (3176, 6155), (3970, 4924)]