2581215

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:120

約数の個数: 64

約数和(自身を含む): 5332992

約数和(自身を除く): 2751777

約数列:

[1, 3, 5, 7, 13, 15, 21, 31, 35, 39, 61, 65, 91, 93, 105, 155, 183, 195, 217, 273, 305, 403, 427, 455, 465, 651, 793, 915, 1085, 1209, 1281, 1365, 1891, 2015, 2135, 2379, 2821, 3255, 3965, 5551, 5673, 6045, 6405, 8463, 9455, 11895, 13237, 14105, 16653, 24583, 27755, 28365, 39711, 42315, 66185, 73749, 83265, 122915, 172081, 198555, 368745, 516243, 860405, 2581215]

約数ペア:

[(1, 2581215), (3, 860405), (5, 516243), (7, 368745), (13, 198555), (15, 172081), (21, 122915), (31, 83265), (35, 73749), (39, 66185), (61, 42315), (65, 39711), (91, 28365), (93, 27755), (105, 24583), (155, 16653), (183, 14105), (195, 13237), (217, 11895), (273, 9455), (305, 8463), (403, 6405), (427, 6045), (455, 5673), (465, 5551), (651, 3965), (793, 3255), (915, 2821), (1085, 2379), (1209, 2135), (1281, 2015), (1365, 1891)]