21576906

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:248

約数の個数: 72

約数和(自身を含む): 52157196

約数和(自身を除く): 30580290

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 41, 78, 82, 117, 123, 169, 173, 234, 246, 338, 346, 369, 507, 519, 533, 738, 1014, 1038, 1066, 1521, 1557, 1599, 2249, 3042, 3114, 3198, 4498, 4797, 6747, 6929, 7093, 9594, 13494, 13858, 14186, 20241, 20787, 21279, 29237, 40482, 41574, 42558, 58474, 62361, 63837, 87711, 92209, 124722, 127674, 175422, 184418, 263133, 276627, 526266, 553254, 829881, 1198717, 1659762, 2397434, 3596151, 7192302, 10788453, 21576906]

約数ペア:

[(1, 21576906), (2, 10788453), (3, 7192302), (6, 3596151), (9, 2397434), (13, 1659762), (18, 1198717), (26, 829881), (39, 553254), (41, 526266), (78, 276627), (82, 263133), (117, 184418), (123, 175422), (169, 127674), (173, 124722), (234, 92209), (246, 87711), (338, 63837), (346, 62361), (369, 58474), (507, 42558), (519, 41574), (533, 40482), (738, 29237), (1014, 21279), (1038, 20787), (1066, 20241), (1521, 14186), (1557, 13858), (1599, 13494), (2249, 9594), (3042, 7093), (3114, 6929), (3198, 6747), (4498, 4797)]