20663910

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{263}}^1$

素因数の和:379

約数の個数: 80

約数和(自身を含む): 56349216

約数和(自身を除く): 35685306

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 97, 135, 162, 194, 263, 270, 291, 405, 485, 526, 582, 789, 810, 873, 970, 1315, 1455, 1578, 1746, 2367, 2619, 2630, 2910, 3945, 4365, 4734, 5238, 7101, 7857, 7890, 8730, 11835, 13095, 14202, 15714, 21303, 23670, 25511, 26190, 35505, 39285, 42606, 51022, 71010, 76533, 78570, 106515, 127555, 153066, 213030, 229599, 255110, 382665, 459198, 688797, 765330, 1147995, 1377594, 2066391, 2295990, 3443985, 4132782, 6887970, 10331955, 20663910]

約数ペア:

[(1, 20663910), (2, 10331955), (3, 6887970), (5, 4132782), (6, 3443985), (9, 2295990), (10, 2066391), (15, 1377594), (18, 1147995), (27, 765330), (30, 688797), (45, 459198), (54, 382665), (81, 255110), (90, 229599), (97, 213030), (135, 153066), (162, 127555), (194, 106515), (263, 78570), (270, 76533), (291, 71010), (405, 51022), (485, 42606), (526, 39285), (582, 35505), (789, 26190), (810, 25511), (873, 23670), (970, 21303), (1315, 15714), (1455, 14202), (1578, 13095), (1746, 11835), (2367, 8730), (2619, 7890), (2630, 7857), (2910, 7101), (3945, 5238), (4365, 4734)]