394665640

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{397}}^1\times {\mathrm{857}}^1$

素因数の和:1294

約数の個数: 64

約数和(自身を含む): 922006800

約数和(自身を除く): 527341160

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 397, 580, 794, 857, 1160, 1588, 1714, 1985, 3176, 3428, 3970, 4285, 6856, 7940, 8570, 11513, 15880, 17140, 23026, 24853, 34280, 46052, 49706, 57565, 92104, 99412, 115130, 124265, 198824, 230260, 248530, 340229, 460520, 497060, 680458, 994120, 1360916, 1701145, 2721832, 3402290, 6804580, 9866641, 13609160, 19733282, 39466564, 49333205, 78933128, 98666410, 197332820, 394665640]

約数ペア:

[(1, 394665640), (2, 197332820), (4, 98666410), (5, 78933128), (8, 49333205), (10, 39466564), (20, 19733282), (29, 13609160), (40, 9866641), (58, 6804580), (116, 3402290), (145, 2721832), (232, 1701145), (290, 1360916), (397, 994120), (580, 680458), (794, 497060), (857, 460520), (1160, 340229), (1588, 248530), (1714, 230260), (1985, 198824), (3176, 124265), (3428, 115130), (3970, 99412), (4285, 92104), (6856, 57565), (7940, 49706), (8570, 46052), (11513, 34280), (15880, 24853), (17140, 23026)]