31018860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{443}}^1$

素因数の和:847

約数の個数: 72

約数和(自身を含む): 94545360

約数和(自身を除く): 63526500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 389, 443, 778, 886, 1167, 1329, 1556, 1772, 1945, 2215, 2334, 2658, 3501, 3890, 3987, 4430, 4668, 5316, 5835, 6645, 7002, 7780, 7974, 8860, 11670, 13290, 14004, 15948, 17505, 19935, 23340, 26580, 35010, 39870, 70020, 79740, 172327, 344654, 516981, 689308, 861635, 1033962, 1550943, 1723270, 2067924, 2584905, 3101886, 3446540, 5169810, 6203772, 7754715, 10339620, 15509430, 31018860]

約数ペア:

[(1, 31018860), (2, 15509430), (3, 10339620), (4, 7754715), (5, 6203772), (6, 5169810), (9, 3446540), (10, 3101886), (12, 2584905), (15, 2067924), (18, 1723270), (20, 1550943), (30, 1033962), (36, 861635), (45, 689308), (60, 516981), (90, 344654), (180, 172327), (389, 79740), (443, 70020), (778, 39870), (886, 35010), (1167, 26580), (1329, 23340), (1556, 19935), (1772, 17505), (1945, 15948), (2215, 14004), (2334, 13290), (2658, 11670), (3501, 8860), (3890, 7974), (3987, 7780), (4430, 7002), (4668, 6645), (5316, 5835)]