18856215

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1931}}^1$

素因数の和:1980

約数の個数: 48

約数和(自身を含む): 38578176

約数和(自身を除く): 19721961

約数列:

[1, 3, 5, 7, 9, 15, 21, 31, 35, 45, 63, 93, 105, 155, 217, 279, 315, 465, 651, 1085, 1395, 1931, 1953, 3255, 5793, 9655, 9765, 13517, 17379, 28965, 40551, 59861, 67585, 86895, 121653, 179583, 202755, 299305, 419027, 538749, 608265, 897915, 1257081, 2095135, 2693745, 3771243, 6285405, 18856215]

約数ペア:

[(1, 18856215), (3, 6285405), (5, 3771243), (7, 2693745), (9, 2095135), (15, 1257081), (21, 897915), (31, 608265), (35, 538749), (45, 419027), (63, 299305), (93, 202755), (105, 179583), (155, 121653), (217, 86895), (279, 67585), (315, 59861), (465, 40551), (651, 28965), (1085, 17379), (1395, 13517), (1931, 9765), (1953, 9655), (3255, 5793)]