21156486

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:293

約数の個数: 64

約数和(自身を含む): 48384000

約数和(自身を除く): 27227514

約数列:

[1, 2, 3, 6, 13, 26, 29, 39, 47, 58, 78, 87, 94, 141, 174, 199, 282, 377, 398, 597, 611, 754, 1131, 1194, 1222, 1363, 1833, 2262, 2587, 2726, 3666, 4089, 5174, 5771, 7761, 8178, 9353, 11542, 15522, 17313, 17719, 18706, 28059, 34626, 35438, 53157, 56118, 75023, 106314, 121589, 150046, 225069, 243178, 271237, 364767, 450138, 542474, 729534, 813711, 1627422, 3526081, 7052162, 10578243, 21156486]

約数ペア:

[(1, 21156486), (2, 10578243), (3, 7052162), (6, 3526081), (13, 1627422), (26, 813711), (29, 729534), (39, 542474), (47, 450138), (58, 364767), (78, 271237), (87, 243178), (94, 225069), (141, 150046), (174, 121589), (199, 106314), (282, 75023), (377, 56118), (398, 53157), (597, 35438), (611, 34626), (754, 28059), (1131, 18706), (1194, 17719), (1222, 17313), (1363, 15522), (1833, 11542), (2262, 9353), (2587, 8178), (2726, 7761), (3666, 5771), (4089, 5174)]