18430370

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1297}}^1$

素因数の和:1347

約数の個数: 48

約数和(自身を含む): 39952440

約数和(自身を除く): 21522070

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 49, 58, 70, 98, 145, 203, 245, 290, 406, 490, 1015, 1297, 1421, 2030, 2594, 2842, 6485, 7105, 9079, 12970, 14210, 18158, 37613, 45395, 63553, 75226, 90790, 127106, 188065, 263291, 317765, 376130, 526582, 635530, 1316455, 1843037, 2632910, 3686074, 9215185, 18430370]

約数ペア:

[(1, 18430370), (2, 9215185), (5, 3686074), (7, 2632910), (10, 1843037), (14, 1316455), (29, 635530), (35, 526582), (49, 376130), (58, 317765), (70, 263291), (98, 188065), (145, 127106), (203, 90790), (245, 75226), (290, 63553), (406, 45395), (490, 37613), (1015, 18158), (1297, 14210), (1421, 12970), (2030, 9079), (2594, 7105), (2842, 6485)]