890256790

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1\times {\mathrm{15583}}^1$

素因数の和:15816

約数の個数: 32

約数和(自身を含む): 1666241280

約数和(自身を除く): 775984490

約数列:

[1, 2, 5, 10, 29, 58, 145, 197, 290, 394, 985, 1970, 5713, 11426, 15583, 28565, 31166, 57130, 77915, 155830, 451907, 903814, 2259535, 3069851, 4519070, 6139702, 15349255, 30698510, 89025679, 178051358, 445128395, 890256790]

約数ペア:

[(1, 890256790), (2, 445128395), (5, 178051358), (10, 89025679), (29, 30698510), (58, 15349255), (145, 6139702), (197, 4519070), (290, 3069851), (394, 2259535), (985, 903814), (1970, 451907), (5713, 155830), (11426, 77915), (15583, 57130), (28565, 31166)]