21353668

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{337}}^1$

素因数の和:452

約数の個数: 48

約数和(自身を含む): 44821504

約数和(自身を除く): 23467836

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 73, 124, 146, 217, 292, 337, 434, 511, 674, 868, 1022, 1348, 2044, 2263, 2359, 4526, 4718, 9052, 9436, 10447, 15841, 20894, 24601, 31682, 41788, 49202, 63364, 73129, 98404, 146258, 172207, 292516, 344414, 688828, 762631, 1525262, 3050524, 5338417, 10676834, 21353668]

約数ペア:

[(1, 21353668), (2, 10676834), (4, 5338417), (7, 3050524), (14, 1525262), (28, 762631), (31, 688828), (62, 344414), (73, 292516), (124, 172207), (146, 146258), (217, 98404), (292, 73129), (337, 63364), (434, 49202), (511, 41788), (674, 31682), (868, 24601), (1022, 20894), (1348, 15841), (2044, 10447), (2263, 9436), (2359, 9052), (4526, 4718)]