21042060

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{509}}^1$

素因数の和:587

約数の個数: 96

約数和(自身を含む): 64774080

約数和(自身を除く): 43732020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 53, 60, 65, 78, 106, 130, 156, 159, 195, 212, 260, 265, 318, 390, 509, 530, 636, 689, 780, 795, 1018, 1060, 1378, 1527, 1590, 2036, 2067, 2545, 2756, 3054, 3180, 3445, 4134, 5090, 6108, 6617, 6890, 7635, 8268, 10180, 10335, 13234, 13780, 15270, 19851, 20670, 26468, 26977, 30540, 33085, 39702, 41340, 53954, 66170, 79404, 80931, 99255, 107908, 132340, 134885, 161862, 198510, 269770, 323724, 350701, 397020, 404655, 539540, 701402, 809310, 1052103, 1402804, 1618620, 1753505, 2104206, 3507010, 4208412, 5260515, 7014020, 10521030, 21042060]

約数ペア:

[(1, 21042060), (2, 10521030), (3, 7014020), (4, 5260515), (5, 4208412), (6, 3507010), (10, 2104206), (12, 1753505), (13, 1618620), (15, 1402804), (20, 1052103), (26, 809310), (30, 701402), (39, 539540), (52, 404655), (53, 397020), (60, 350701), (65, 323724), (78, 269770), (106, 198510), (130, 161862), (156, 134885), (159, 132340), (195, 107908), (212, 99255), (260, 80931), (265, 79404), (318, 66170), (390, 53954), (509, 41340), (530, 39702), (636, 33085), (689, 30540), (780, 26977), (795, 26468), (1018, 20670), (1060, 19851), (1378, 15270), (1527, 13780), (1590, 13234), (2036, 10335), (2067, 10180), (2545, 8268), (2756, 7635), (3054, 6890), (3180, 6617), (3445, 6108), (4134, 5090)]