449991340

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{197}}^1\times {\mathrm{631}}^1$

素因数の和:1018

約数の個数: 48

約数和(自身を含む): 956539584

約数和(自身を除く): 506548244

約数列:

[1, 2, 4, 5, 10, 20, 181, 197, 362, 394, 631, 724, 788, 905, 985, 1262, 1810, 1970, 2524, 3155, 3620, 3940, 6310, 12620, 35657, 71314, 114211, 124307, 142628, 178285, 228422, 248614, 356570, 456844, 497228, 571055, 621535, 713140, 1142110, 1243070, 2284220, 2486140, 22499567, 44999134, 89998268, 112497835, 224995670, 449991340]

約数ペア:

[(1, 449991340), (2, 224995670), (4, 112497835), (5, 89998268), (10, 44999134), (20, 22499567), (181, 2486140), (197, 2284220), (362, 1243070), (394, 1142110), (631, 713140), (724, 621535), (788, 571055), (905, 497228), (985, 456844), (1262, 356570), (1810, 248614), (1970, 228422), (2524, 178285), (3155, 142628), (3620, 124307), (3940, 114211), (6310, 71314), (12620, 35657)]