21490107835

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{541}}^1\times {\mathrm{1181}}^1$

素因数の和:1796

約数の個数: 48

約数和(自身を含む): 30535655616

約数和(自身を除く): 9045547781

約数列:

[1, 5, 7, 31, 35, 155, 217, 541, 961, 1085, 1181, 2705, 3787, 4805, 5905, 6727, 8267, 16771, 18935, 33635, 36611, 41335, 83855, 117397, 183055, 256277, 519901, 586985, 638921, 1134941, 1281385, 2599505, 3194605, 3639307, 4472447, 5674705, 7944587, 18196535, 19806551, 22362235, 39722935, 99032755, 138645857, 614003081, 693229285, 3070015405, 4298021567, 21490107835]

約数ペア:

[(1, 21490107835), (5, 4298021567), (7, 3070015405), (31, 693229285), (35, 614003081), (155, 138645857), (217, 99032755), (541, 39722935), (961, 22362235), (1085, 19806551), (1181, 18196535), (2705, 7944587), (3787, 5674705), (4805, 4472447), (5905, 3639307), (6727, 3194605), (8267, 2599505), (16771, 1281385), (18935, 1134941), (33635, 638921), (36611, 586985), (41335, 519901), (83855, 256277), (117397, 183055)]