291235490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{320039}}^1$

素因数の和:320066

約数の個数: 32

約数和(自身を含む): 645200640

約数和(自身を除く): 353965150

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 455, 910, 320039, 640078, 1600195, 2240273, 3200390, 4160507, 4480546, 8321014, 11201365, 20802535, 22402730, 29123549, 41605070, 58247098, 145617745, 291235490]

約数ペア:

[(1, 291235490), (2, 145617745), (5, 58247098), (7, 41605070), (10, 29123549), (13, 22402730), (14, 20802535), (26, 11201365), (35, 8321014), (65, 4480546), (70, 4160507), (91, 3200390), (130, 2240273), (182, 1600195), (455, 640078), (910, 320039)]