19835505

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{241}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 36241920

約数和(自身を除く): 16406415

約数列:

[1, 3, 5, 9, 15, 31, 45, 59, 93, 155, 177, 241, 279, 295, 465, 531, 723, 885, 1205, 1395, 1829, 2169, 2655, 3615, 5487, 7471, 9145, 10845, 14219, 16461, 22413, 27435, 37355, 42657, 67239, 71095, 82305, 112065, 127971, 213285, 336195, 440789, 639855, 1322367, 2203945, 3967101, 6611835, 19835505]

約数ペア:

[(1, 19835505), (3, 6611835), (5, 3967101), (9, 2203945), (15, 1322367), (31, 639855), (45, 440789), (59, 336195), (93, 213285), (155, 127971), (177, 112065), (241, 82305), (279, 71095), (295, 67239), (465, 42657), (531, 37355), (723, 27435), (885, 22413), (1205, 16461), (1395, 14219), (1829, 10845), (2169, 9145), (2655, 7471), (3615, 5487)]