21068418

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{7487}}^1$

素因数の和:7566

約数の個数: 32

約数和(自身を含む): 48881664

約数和(自身を除く): 27813246

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 67, 134, 201, 402, 469, 938, 1407, 2814, 7487, 14974, 22461, 44922, 52409, 104818, 157227, 314454, 501629, 1003258, 1504887, 3009774, 3511403, 7022806, 10534209, 21068418]

約数ペア:

[(1, 21068418), (2, 10534209), (3, 7022806), (6, 3511403), (7, 3009774), (14, 1504887), (21, 1003258), (42, 501629), (67, 314454), (134, 157227), (201, 104818), (402, 52409), (469, 44922), (938, 22461), (1407, 14974), (2814, 7487)]