628280

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 1436400

約数和(自身を除く): 808120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 139, 226, 278, 452, 556, 565, 695, 904, 1112, 1130, 1390, 2260, 2780, 4520, 5560, 15707, 31414, 62828, 78535, 125656, 157070, 314140, 628280]

約数ペア:

[(1, 628280), (2, 314140), (4, 157070), (5, 125656), (8, 78535), (10, 62828), (20, 31414), (40, 15707), (113, 5560), (139, 4520), (226, 2780), (278, 2260), (452, 1390), (556, 1130), (565, 1112), (695, 904)]