21297465

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{727}}^1$

素因数の和:779

約数の個数: 64

約数和(自身を含む): 44728320

約数和(自身を除く): 23430855

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 31, 35, 45, 63, 93, 105, 135, 155, 189, 217, 279, 315, 465, 651, 727, 837, 945, 1085, 1395, 1953, 2181, 3255, 3635, 4185, 5089, 5859, 6543, 9765, 10905, 15267, 19629, 22537, 25445, 29295, 32715, 45801, 67611, 76335, 98145, 112685, 137403, 157759, 202833, 229005, 338055, 473277, 608499, 687015, 788795, 1014165, 1419831, 2366385, 3042495, 4259493, 7099155, 21297465]

約数ペア:

[(1, 21297465), (3, 7099155), (5, 4259493), (7, 3042495), (9, 2366385), (15, 1419831), (21, 1014165), (27, 788795), (31, 687015), (35, 608499), (45, 473277), (63, 338055), (93, 229005), (105, 202833), (135, 157759), (155, 137403), (189, 112685), (217, 98145), (279, 76335), (315, 67611), (465, 45801), (651, 32715), (727, 29295), (837, 25445), (945, 22537), (1085, 19629), (1395, 15267), (1953, 10905), (2181, 9765), (3255, 6543), (3635, 5859), (4185, 5089)]