978018940

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{331}}^1\times {\mathrm{941}}^1$

素因数の和:1438

約数の個数: 48

約数和(自身を含む): 2075369184

約数和(自身を除く): 1097350244

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 331, 628, 662, 785, 941, 1324, 1570, 1655, 1882, 3140, 3310, 3764, 4705, 6620, 9410, 18820, 51967, 103934, 147737, 207868, 259835, 295474, 311471, 519670, 590948, 622942, 738685, 1039340, 1245884, 1477370, 1557355, 2954740, 3114710, 6229420, 48900947, 97801894, 195603788, 244504735, 489009470, 978018940]

約数ペア:

[(1, 978018940), (2, 489009470), (4, 244504735), (5, 195603788), (10, 97801894), (20, 48900947), (157, 6229420), (314, 3114710), (331, 2954740), (628, 1557355), (662, 1477370), (785, 1245884), (941, 1039340), (1324, 738685), (1570, 622942), (1655, 590948), (1882, 519670), (3140, 311471), (3310, 295474), (3764, 259835), (4705, 207868), (6620, 147737), (9410, 103934), (18820, 51967)]