20621965

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{743}}^1$

素因数の和:829

約数の個数: 32

約数和(自身を含む): 30998016

約数和(自身を除く): 10376051

約数列:

[1, 5, 7, 13, 35, 61, 65, 91, 305, 427, 455, 743, 793, 2135, 3715, 3965, 5201, 5551, 9659, 26005, 27755, 45323, 48295, 67613, 226615, 317261, 338065, 589199, 1586305, 2945995, 4124393, 20621965]

約数ペア:

[(1, 20621965), (5, 4124393), (7, 2945995), (13, 1586305), (35, 589199), (61, 338065), (65, 317261), (91, 226615), (305, 67613), (427, 48295), (455, 45323), (743, 27755), (793, 26005), (2135, 9659), (3715, 5551), (3965, 5201)]