20855394

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{347}}^1$

素因数の和:421

約数の個数: 80

約数和(自身を含む): 54571968

約数和(自身を除く): 33716574

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 53, 54, 63, 81, 106, 126, 159, 162, 189, 318, 347, 371, 378, 477, 567, 694, 742, 954, 1041, 1113, 1134, 1431, 2082, 2226, 2429, 2862, 3123, 3339, 4293, 4858, 6246, 6678, 7287, 8586, 9369, 10017, 14574, 18391, 18738, 20034, 21861, 28107, 30051, 36782, 43722, 55173, 56214, 60102, 65583, 110346, 128737, 131166, 165519, 196749, 257474, 331038, 386211, 393498, 496557, 772422, 993114, 1158633, 1489671, 2317266, 2979342, 3475899, 6951798, 10427697, 20855394]

約数ペア:

[(1, 20855394), (2, 10427697), (3, 6951798), (6, 3475899), (7, 2979342), (9, 2317266), (14, 1489671), (18, 1158633), (21, 993114), (27, 772422), (42, 496557), (53, 393498), (54, 386211), (63, 331038), (81, 257474), (106, 196749), (126, 165519), (159, 131166), (162, 128737), (189, 110346), (318, 65583), (347, 60102), (371, 56214), (378, 55173), (477, 43722), (567, 36782), (694, 30051), (742, 28107), (954, 21861), (1041, 20034), (1113, 18738), (1134, 18391), (1431, 14574), (2082, 10017), (2226, 9369), (2429, 8586), (2862, 7287), (3123, 6678), (3339, 6246), (4293, 4858)]