19996065

素因数分解:

$3^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{509}}^1$

素因数の和:623

約数の個数: 40

約数和(自身を含む): 36285480

約数和(自身を除く): 16289415

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 97, 135, 291, 405, 485, 509, 873, 1455, 1527, 2545, 2619, 4365, 4581, 7635, 7857, 13095, 13743, 22905, 39285, 41229, 49373, 68715, 148119, 206145, 246865, 444357, 740595, 1333071, 2221785, 3999213, 6665355, 19996065]

約数ペア:

[(1, 19996065), (3, 6665355), (5, 3999213), (9, 2221785), (15, 1333071), (27, 740595), (45, 444357), (81, 246865), (97, 206145), (135, 148119), (291, 68715), (405, 49373), (485, 41229), (509, 39285), (873, 22905), (1455, 13743), (1527, 13095), (2545, 7857), (2619, 7635), (4365, 4581)]