138236840

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{70529}}^1$

素因数の和:70554

約数の個数: 48

約数和(自身を含む): 361818900

約数和(自身を除く): 223582060

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 70529, 141058, 282116, 352645, 493703, 564232, 705290, 987406, 1410580, 1974812, 2468515, 2821160, 3455921, 3949624, 4937030, 6911842, 9874060, 13823684, 17279605, 19748120, 27647368, 34559210, 69118420, 138236840]

約数ペア:

[(1, 138236840), (2, 69118420), (4, 34559210), (5, 27647368), (7, 19748120), (8, 17279605), (10, 13823684), (14, 9874060), (20, 6911842), (28, 4937030), (35, 3949624), (40, 3455921), (49, 2821160), (56, 2468515), (70, 1974812), (98, 1410580), (140, 987406), (196, 705290), (245, 564232), (280, 493703), (392, 352645), (490, 282116), (980, 141058), (1960, 70529)]