21989718

素因数分解:

$2^1\times 3^4\times {\mathrm{149}}^1\times {\mathrm{911}}^1$

素因数の和:1074

約数の個数: 40

約数和(自身を含む): 49658400

約数和(自身を除く): 27668682

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 149, 162, 298, 447, 894, 911, 1341, 1822, 2682, 2733, 4023, 5466, 8046, 8199, 12069, 16398, 24138, 24597, 49194, 73791, 135739, 147582, 271478, 407217, 814434, 1221651, 2443302, 3664953, 7329906, 10994859, 21989718]

約数ペア:

[(1, 21989718), (2, 10994859), (3, 7329906), (6, 3664953), (9, 2443302), (18, 1221651), (27, 814434), (54, 407217), (81, 271478), (149, 147582), (162, 135739), (298, 73791), (447, 49194), (894, 24597), (911, 24138), (1341, 16398), (1822, 12069), (2682, 8199), (2733, 8046), (4023, 5466)]