209278980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{21937}}^1$

素因数の和:22005

約数の個数: 72

約数和(自身を含む): 646819992

約数和(自身を除く): 437541012

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 53, 60, 90, 106, 159, 180, 212, 265, 318, 477, 530, 636, 795, 954, 1060, 1590, 1908, 2385, 3180, 4770, 9540, 21937, 43874, 65811, 87748, 109685, 131622, 197433, 219370, 263244, 329055, 394866, 438740, 658110, 789732, 987165, 1162661, 1316220, 1974330, 2325322, 3487983, 3948660, 4650644, 5813305, 6975966, 10463949, 11626610, 13951932, 17439915, 20927898, 23253220, 34879830, 41855796, 52319745, 69759660, 104639490, 209278980]

約数ペア:

[(1, 209278980), (2, 104639490), (3, 69759660), (4, 52319745), (5, 41855796), (6, 34879830), (9, 23253220), (10, 20927898), (12, 17439915), (15, 13951932), (18, 11626610), (20, 10463949), (30, 6975966), (36, 5813305), (45, 4650644), (53, 3948660), (60, 3487983), (90, 2325322), (106, 1974330), (159, 1316220), (180, 1162661), (212, 987165), (265, 789732), (318, 658110), (477, 438740), (530, 394866), (636, 329055), (795, 263244), (954, 219370), (1060, 197433), (1590, 131622), (1908, 109685), (2385, 87748), (3180, 65811), (4770, 43874), (9540, 21937)]