406937778

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1\times {\mathrm{373}}^1$

素因数の和:659

約数の個数: 64

約数和(自身を含む): 895732992

約数和(自身を除く): 488795214

約数列:

[1, 2, 3, 6, 13, 26, 39, 71, 78, 142, 197, 213, 373, 394, 426, 591, 746, 923, 1119, 1182, 1846, 2238, 2561, 2769, 4849, 5122, 5538, 7683, 9698, 13987, 14547, 15366, 26483, 27974, 29094, 41961, 52966, 73481, 79449, 83922, 146962, 158898, 181831, 220443, 344279, 363662, 440886, 545493, 688558, 955253, 1032837, 1090986, 1910506, 2065674, 2865759, 5217151, 5731518, 10434302, 15651453, 31302906, 67822963, 135645926, 203468889, 406937778]

約数ペア:

[(1, 406937778), (2, 203468889), (3, 135645926), (6, 67822963), (13, 31302906), (26, 15651453), (39, 10434302), (71, 5731518), (78, 5217151), (142, 2865759), (197, 2065674), (213, 1910506), (373, 1090986), (394, 1032837), (426, 955253), (591, 688558), (746, 545493), (923, 440886), (1119, 363662), (1182, 344279), (1846, 220443), (2238, 181831), (2561, 158898), (2769, 146962), (4849, 83922), (5122, 79449), (5538, 73481), (7683, 52966), (9698, 41961), (13987, 29094), (14547, 27974), (15366, 26483)]