19977460

素因数分解:

$2^2\times 5^1\times {\mathrm{631}}^1\times {\mathrm{1583}}^1$

素因数の和:2223

約数の個数: 24

約数和(自身を含む): 42045696

約数和(自身を除く): 22068236

約数列:

[1, 2, 4, 5, 10, 20, 631, 1262, 1583, 2524, 3155, 3166, 6310, 6332, 7915, 12620, 15830, 31660, 998873, 1997746, 3995492, 4994365, 9988730, 19977460]

約数ペア:

[(1, 19977460), (2, 9988730), (4, 4994365), (5, 3995492), (10, 1997746), (20, 998873), (631, 31660), (1262, 15830), (1583, 12620), (2524, 7915), (3155, 6332), (3166, 6310)]