20565380780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{152857}}^1$

素因数の和:152935

約数の個数: 72

約数和(自身を含む): 51000765984

約数和(自身を除く): 30435385204

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 961, 1085, 1922, 2170, 3844, 4340, 4805, 6727, 9610, 13454, 19220, 26908, 33635, 67270, 134540, 152857, 305714, 611428, 764285, 1069999, 1528570, 2139998, 3057140, 4279996, 4738567, 5349995, 9477134, 10699990, 18954268, 21399980, 23692835, 33169969, 47385670, 66339938, 94771340, 132679876, 146895577, 165849845, 293791154, 331699690, 587582308, 663399380, 734477885, 1028269039, 1468955770, 2056538078, 2937911540, 4113076156, 5141345195, 10282690390, 20565380780]

約数ペア:

[(1, 20565380780), (2, 10282690390), (4, 5141345195), (5, 4113076156), (7, 2937911540), (10, 2056538078), (14, 1468955770), (20, 1028269039), (28, 734477885), (31, 663399380), (35, 587582308), (62, 331699690), (70, 293791154), (124, 165849845), (140, 146895577), (155, 132679876), (217, 94771340), (310, 66339938), (434, 47385670), (620, 33169969), (868, 23692835), (961, 21399980), (1085, 18954268), (1922, 10699990), (2170, 9477134), (3844, 5349995), (4340, 4738567), (4805, 4279996), (6727, 3057140), (9610, 2139998), (13454, 1528570), (19220, 1069999), (26908, 764285), (33635, 611428), (67270, 305714), (134540, 152857)]