20798505

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1693}}^1$

素因数の和:1727

約数の個数: 64

約数和(自身を含む): 45534720

約数和(自身を除く): 24736215

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 45, 63, 65, 91, 105, 117, 135, 189, 195, 273, 315, 351, 455, 585, 819, 945, 1365, 1693, 1755, 2457, 4095, 5079, 8465, 11851, 12285, 15237, 22009, 25395, 35553, 45711, 59255, 66027, 76185, 106659, 110045, 154063, 177765, 198081, 228555, 319977, 330135, 462189, 533295, 594243, 770315, 990405, 1386567, 1599885, 2310945, 2971215, 4159701, 6932835, 20798505]

約数ペア:

[(1, 20798505), (3, 6932835), (5, 4159701), (7, 2971215), (9, 2310945), (13, 1599885), (15, 1386567), (21, 990405), (27, 770315), (35, 594243), (39, 533295), (45, 462189), (63, 330135), (65, 319977), (91, 228555), (105, 198081), (117, 177765), (135, 154063), (189, 110045), (195, 106659), (273, 76185), (315, 66027), (351, 59255), (455, 45711), (585, 35553), (819, 25395), (945, 22009), (1365, 15237), (1693, 12285), (1755, 11851), (2457, 8465), (4095, 5079)]