21505284

素因数分解:

$2^2\times 3^3\times {\mathrm{173}}^1\times {\mathrm{1151}}^1$

素因数の和:1337

約数の個数: 48

約数和(自身を含む): 56125440

約数和(自身を除く): 34620156

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 173, 346, 519, 692, 1038, 1151, 1557, 2076, 2302, 3114, 3453, 4604, 4671, 6228, 6906, 9342, 10359, 13812, 18684, 20718, 31077, 41436, 62154, 124308, 199123, 398246, 597369, 796492, 1194738, 1792107, 2389476, 3584214, 5376321, 7168428, 10752642, 21505284]

約数ペア:

[(1, 21505284), (2, 10752642), (3, 7168428), (4, 5376321), (6, 3584214), (9, 2389476), (12, 1792107), (18, 1194738), (27, 796492), (36, 597369), (54, 398246), (108, 199123), (173, 124308), (346, 62154), (519, 41436), (692, 31077), (1038, 20718), (1151, 18684), (1557, 13812), (2076, 10359), (2302, 9342), (3114, 6906), (3453, 6228), (4604, 4671)]