291206320

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{84653}}^1$

素因数の和:84709

約数の個数: 40

約数和(自身を含む): 692808336

約数和(自身を除く): 401602016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 84653, 169306, 338612, 423265, 677224, 846530, 1354448, 1693060, 3386120, 3640079, 6772240, 7280158, 14560316, 18200395, 29120632, 36400790, 58241264, 72801580, 145603160, 291206320]

約数ペア:

[(1, 291206320), (2, 145603160), (4, 72801580), (5, 58241264), (8, 36400790), (10, 29120632), (16, 18200395), (20, 14560316), (40, 7280158), (43, 6772240), (80, 3640079), (86, 3386120), (172, 1693060), (215, 1354448), (344, 846530), (430, 677224), (688, 423265), (860, 338612), (1720, 169306), (3440, 84653)]