21016156665

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{449}}^1\times {\mathrm{1999}}^1$

素因数の和:2686

約数の個数: 64

約数和(自身を含む): 38707200000

約数和(自身を除く): 17691043335

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 223, 449, 669, 1115, 1347, 1561, 1999, 2245, 3143, 3345, 4683, 5997, 6735, 7805, 9429, 9995, 13993, 15715, 23415, 29985, 41979, 47145, 69965, 100127, 209895, 300381, 445777, 500635, 700889, 897551, 1337331, 1501905, 2102667, 2228885, 2692653, 3120439, 3504445, 4487755, 6282857, 6686655, 9361317, 10513335, 13463265, 15602195, 18848571, 31414285, 46806585, 94242855, 200153873, 600461619, 1000769365, 1401077111, 3002308095, 4203231333, 7005385555, 21016156665]

約数ペア:

[(1, 21016156665), (3, 7005385555), (5, 4203231333), (7, 3002308095), (15, 1401077111), (21, 1000769365), (35, 600461619), (105, 200153873), (223, 94242855), (449, 46806585), (669, 31414285), (1115, 18848571), (1347, 15602195), (1561, 13463265), (1999, 10513335), (2245, 9361317), (3143, 6686655), (3345, 6282857), (4683, 4487755), (5997, 3504445), (6735, 3120439), (7805, 2692653), (9429, 2228885), (9995, 2102667), (13993, 1501905), (15715, 1337331), (23415, 897551), (29985, 700889), (41979, 500635), (47145, 445777), (69965, 300381), (100127, 209895)]