20778315

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{229}}^1\times {\mathrm{263}}^1$

素因数の和:523

約数の個数: 32

約数和(自身を含む): 34974720

約数和(自身を除く): 14196405

約数列:

[1, 3, 5, 15, 23, 69, 115, 229, 263, 345, 687, 789, 1145, 1315, 3435, 3945, 5267, 6049, 15801, 18147, 26335, 30245, 60227, 79005, 90735, 180681, 301135, 903405, 1385221, 4155663, 6926105, 20778315]

約数ペア:

[(1, 20778315), (3, 6926105), (5, 4155663), (15, 1385221), (23, 903405), (69, 301135), (115, 180681), (229, 90735), (263, 79005), (345, 60227), (687, 30245), (789, 26335), (1145, 18147), (1315, 15801), (3435, 6049), (3945, 5267)]