21000921914

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1\times {\mathrm{146191}}^1$

素因数の和:146562

約数の個数: 32

約数和(自身を含む): 37275451392

約数和(自身を除く): 16274529478

約数列:

[1, 2, 7, 14, 31, 62, 217, 331, 434, 662, 2317, 4634, 10261, 20522, 71827, 143654, 146191, 292382, 1023337, 2046674, 4531921, 9063842, 31723447, 48389221, 63446894, 96778442, 338724547, 677449094, 1500065851, 3000131702, 10500460957, 21000921914]

約数ペア:

[(1, 21000921914), (2, 10500460957), (7, 3000131702), (14, 1500065851), (31, 677449094), (62, 338724547), (217, 96778442), (331, 63446894), (434, 48389221), (662, 31723447), (2317, 9063842), (4634, 4531921), (10261, 2046674), (20522, 1023337), (71827, 292382), (143654, 146191)]