1904064540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{647641}}^1$

素因数の和:647667

約数の個数: 72

約数和(自身を含む): 6201819792

約数和(自身を除く): 4297755252

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 647641, 1295282, 1942923, 2590564, 3238205, 3885846, 4533487, 6476410, 7771692, 9066974, 9714615, 12952820, 13600461, 18133948, 19429230, 22667435, 27200922, 31734409, 38858460, 45334870, 54401844, 63468818, 68002305, 90669740, 95203227, 126937636, 136004610, 158672045, 190406454, 272009220, 317344090, 380812908, 476016135, 634688180, 952032270, 1904064540]

約数ペア:

[(1, 1904064540), (2, 952032270), (3, 634688180), (4, 476016135), (5, 380812908), (6, 317344090), (7, 272009220), (10, 190406454), (12, 158672045), (14, 136004610), (15, 126937636), (20, 95203227), (21, 90669740), (28, 68002305), (30, 63468818), (35, 54401844), (42, 45334870), (49, 38858460), (60, 31734409), (70, 27200922), (84, 22667435), (98, 19429230), (105, 18133948), (140, 13600461), (147, 12952820), (196, 9714615), (210, 9066974), (245, 7771692), (294, 6476410), (420, 4533487), (490, 3885846), (588, 3238205), (735, 2590564), (980, 1942923), (1470, 1295282), (2940, 647641)]