21017718

素因数分解:

$2^1\times 3^4\times {\mathrm{137}}^1\times {\mathrm{947}}^1$

素因数の和:1098

約数の個数: 40

約数和(自身を含む): 47489112

約数和(自身を除く): 26471394

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 137, 162, 274, 411, 822, 947, 1233, 1894, 2466, 2841, 3699, 5682, 7398, 8523, 11097, 17046, 22194, 25569, 51138, 76707, 129739, 153414, 259478, 389217, 778434, 1167651, 2335302, 3502953, 7005906, 10508859, 21017718]

約数ペア:

[(1, 21017718), (2, 10508859), (3, 7005906), (6, 3502953), (9, 2335302), (18, 1167651), (27, 778434), (54, 389217), (81, 259478), (137, 153414), (162, 129739), (274, 76707), (411, 51138), (822, 25569), (947, 22194), (1233, 17046), (1894, 11097), (2466, 8523), (2841, 7398), (3699, 5682)]