21000659404

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{26947}}^1$

素因数の和:27214

約数の個数: 48

約数和(自身を含む): 39441523968

約数和(自身を除く): 18440864564

約数列:

[1, 2, 4, 23, 43, 46, 86, 92, 172, 197, 394, 788, 989, 1978, 3956, 4531, 8471, 9062, 16942, 18124, 26947, 33884, 53894, 107788, 194833, 389666, 619781, 779332, 1158721, 1239562, 2317442, 2479124, 4634884, 5308559, 10617118, 21234236, 26650583, 53301166, 106602332, 122096857, 228268037, 244193714, 456536074, 488387428, 913072148, 5250164851, 10500329702, 21000659404]

約数ペア:

[(1, 21000659404), (2, 10500329702), (4, 5250164851), (23, 913072148), (43, 488387428), (46, 456536074), (86, 244193714), (92, 228268037), (172, 122096857), (197, 106602332), (394, 53301166), (788, 26650583), (989, 21234236), (1978, 10617118), (3956, 5308559), (4531, 4634884), (8471, 2479124), (9062, 2317442), (16942, 1239562), (18124, 1158721), (26947, 779332), (33884, 619781), (53894, 389666), (107788, 194833)]