20986308

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{11897}}^1$

素因数の和:11921

約数の個数: 54

約数和(自身を含む): 61714926

約数和(自身を除く): 40728618

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 49, 63, 84, 98, 126, 147, 196, 252, 294, 441, 588, 882, 1764, 11897, 23794, 35691, 47588, 71382, 83279, 107073, 142764, 166558, 214146, 249837, 333116, 428292, 499674, 582953, 749511, 999348, 1165906, 1499022, 1748859, 2331812, 2998044, 3497718, 5246577, 6995436, 10493154, 20986308]

約数ペア:

[(1, 20986308), (2, 10493154), (3, 6995436), (4, 5246577), (6, 3497718), (7, 2998044), (9, 2331812), (12, 1748859), (14, 1499022), (18, 1165906), (21, 999348), (28, 749511), (36, 582953), (42, 499674), (49, 428292), (63, 333116), (84, 249837), (98, 214146), (126, 166558), (147, 142764), (196, 107073), (252, 83279), (294, 71382), (441, 47588), (588, 35691), (882, 23794), (1764, 11897)]