20666820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:229

約数の個数: 96

約数和(自身を含む): 60455808

約数和(自身を除く): 39788988

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 53, 60, 67, 97, 106, 134, 159, 194, 201, 212, 265, 268, 291, 318, 335, 388, 402, 485, 530, 582, 636, 670, 795, 804, 970, 1005, 1060, 1164, 1340, 1455, 1590, 1940, 2010, 2910, 3180, 3551, 4020, 5141, 5820, 6499, 7102, 10282, 10653, 12998, 14204, 15423, 17755, 19497, 20564, 21306, 25705, 25996, 30846, 32495, 35510, 38994, 42612, 51410, 53265, 61692, 64990, 71020, 77115, 77988, 97485, 102820, 106530, 129980, 154230, 194970, 213060, 308460, 344447, 389940, 688894, 1033341, 1377788, 1722235, 2066682, 3444470, 4133364, 5166705, 6888940, 10333410, 20666820]

約数ペア:

[(1, 20666820), (2, 10333410), (3, 6888940), (4, 5166705), (5, 4133364), (6, 3444470), (10, 2066682), (12, 1722235), (15, 1377788), (20, 1033341), (30, 688894), (53, 389940), (60, 344447), (67, 308460), (97, 213060), (106, 194970), (134, 154230), (159, 129980), (194, 106530), (201, 102820), (212, 97485), (265, 77988), (268, 77115), (291, 71020), (318, 64990), (335, 61692), (388, 53265), (402, 51410), (485, 42612), (530, 38994), (582, 35510), (636, 32495), (670, 30846), (795, 25996), (804, 25705), (970, 21306), (1005, 20564), (1060, 19497), (1164, 17755), (1340, 15423), (1455, 14204), (1590, 12998), (1940, 10653), (2010, 10282), (2910, 7102), (3180, 6499), (3551, 5820), (4020, 5141)]