81530140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{5233}}^1$

素因数の和:5302

約数の個数: 48

約数和(自身を含む): 184655520

約数和(自身を除く): 103125380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 164, 190, 205, 380, 410, 779, 820, 1558, 3116, 3895, 5233, 7790, 10466, 15580, 20932, 26165, 52330, 99427, 104660, 198854, 214553, 397708, 429106, 497135, 858212, 994270, 1072765, 1988540, 2145530, 4076507, 4291060, 8153014, 16306028, 20382535, 40765070, 81530140]

約数ペア:

[(1, 81530140), (2, 40765070), (4, 20382535), (5, 16306028), (10, 8153014), (19, 4291060), (20, 4076507), (38, 2145530), (41, 1988540), (76, 1072765), (82, 994270), (95, 858212), (164, 497135), (190, 429106), (205, 397708), (380, 214553), (410, 198854), (779, 104660), (820, 99427), (1558, 52330), (3116, 26165), (3895, 20932), (5233, 15580), (7790, 10466)]