21042490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{9697}}^1$

素因数の和:9742

約数の個数: 32

約数和(自身を含む): 44688384

約数和(自身を除く): 23645894

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 434, 1085, 2170, 9697, 19394, 48485, 67879, 96970, 135758, 300607, 339395, 601214, 678790, 1503035, 2104249, 3006070, 4208498, 10521245, 21042490]

約数ペア:

[(1, 21042490), (2, 10521245), (5, 4208498), (7, 3006070), (10, 2104249), (14, 1503035), (31, 678790), (35, 601214), (62, 339395), (70, 300607), (155, 135758), (217, 96970), (310, 67879), (434, 48485), (1085, 19394), (2170, 9697)]