40578980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{1609}}^1$

素因数の和:1728

約数の個数: 48

約数和(自身を含む): 92774640

約数和(自身を除く): 52195660

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 97, 130, 194, 260, 388, 485, 970, 1261, 1609, 1940, 2522, 3218, 5044, 6305, 6436, 8045, 12610, 16090, 20917, 25220, 32180, 41834, 83668, 104585, 156073, 209170, 312146, 418340, 624292, 780365, 1560730, 2028949, 3121460, 4057898, 8115796, 10144745, 20289490, 40578980]

約数ペア:

[(1, 40578980), (2, 20289490), (4, 10144745), (5, 8115796), (10, 4057898), (13, 3121460), (20, 2028949), (26, 1560730), (52, 780365), (65, 624292), (97, 418340), (130, 312146), (194, 209170), (260, 156073), (388, 104585), (485, 83668), (970, 41834), (1261, 32180), (1609, 25220), (1940, 20917), (2522, 16090), (3218, 12610), (5044, 8045), (6305, 6436)]