9781940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{653}}^1$

素因数の和:776

約数の個数: 48

約数和(自身を含む): 23732352

約数和(自身を除く): 13950412

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 214, 428, 535, 653, 749, 1070, 1306, 1498, 2140, 2612, 2996, 3265, 3745, 4571, 6530, 7490, 9142, 13060, 14980, 18284, 22855, 45710, 69871, 91420, 139742, 279484, 349355, 489097, 698710, 978194, 1397420, 1956388, 2445485, 4890970, 9781940]

約数ペア:

[(1, 9781940), (2, 4890970), (4, 2445485), (5, 1956388), (7, 1397420), (10, 978194), (14, 698710), (20, 489097), (28, 349355), (35, 279484), (70, 139742), (107, 91420), (140, 69871), (214, 45710), (428, 22855), (535, 18284), (653, 14980), (749, 13060), (1070, 9142), (1306, 7490), (1498, 6530), (2140, 4571), (2612, 3745), (2996, 3265)]