19916286

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:225

約数の個数: 64

約数和(自身を含む): 45147648

約数和(自身を除く): 25231362

約数列:

[1, 2, 3, 6, 13, 26, 37, 39, 67, 74, 78, 103, 111, 134, 201, 206, 222, 309, 402, 481, 618, 871, 962, 1339, 1443, 1742, 2479, 2613, 2678, 2886, 3811, 4017, 4958, 5226, 6901, 7437, 7622, 8034, 11433, 13802, 14874, 20703, 22866, 32227, 41406, 49543, 64454, 89713, 96681, 99086, 148629, 179426, 193362, 255337, 269139, 297258, 510674, 538278, 766011, 1532022, 3319381, 6638762, 9958143, 19916286]

約数ペア:

[(1, 19916286), (2, 9958143), (3, 6638762), (6, 3319381), (13, 1532022), (26, 766011), (37, 538278), (39, 510674), (67, 297258), (74, 269139), (78, 255337), (103, 193362), (111, 179426), (134, 148629), (201, 99086), (206, 96681), (222, 89713), (309, 64454), (402, 49543), (481, 41406), (618, 32227), (871, 22866), (962, 20703), (1339, 14874), (1443, 13802), (1742, 11433), (2479, 8034), (2613, 7622), (2678, 7437), (2886, 6901), (3811, 5226), (4017, 4958)]