19935015

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{997}}^1$

素因数の和:1079

約数の個数: 32

約数和(自身を含む): 33724416

約数和(自身を除く): 13789401

約数列:

[1, 3, 5, 15, 31, 43, 93, 129, 155, 215, 465, 645, 997, 1333, 2991, 3999, 4985, 6665, 14955, 19995, 30907, 42871, 92721, 128613, 154535, 214355, 463605, 643065, 1329001, 3987003, 6645005, 19935015]

約数ペア:

[(1, 19935015), (3, 6645005), (5, 3987003), (15, 1329001), (31, 643065), (43, 463605), (93, 214355), (129, 154535), (155, 128613), (215, 92721), (465, 42871), (645, 30907), (997, 19995), (1333, 14955), (2991, 6665), (3999, 4985)]