19713870

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19913}}^1$

素因数の和:19937

約数の個数: 48

約数和(自身を含む): 55918512

約数和(自身を除く): 36204642

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990, 19913, 39826, 59739, 99565, 119478, 179217, 199130, 219043, 298695, 358434, 438086, 597390, 657129, 896085, 1095215, 1314258, 1792170, 1971387, 2190430, 3285645, 3942774, 6571290, 9856935, 19713870]

約数ペア:

[(1, 19713870), (2, 9856935), (3, 6571290), (5, 3942774), (6, 3285645), (9, 2190430), (10, 1971387), (11, 1792170), (15, 1314258), (18, 1095215), (22, 896085), (30, 657129), (33, 597390), (45, 438086), (55, 358434), (66, 298695), (90, 219043), (99, 199130), (110, 179217), (165, 119478), (198, 99565), (330, 59739), (495, 39826), (990, 19913)]