17987511

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 26127360

約数和(自身を除く): 8139849

約数列:

[1, 3, 29, 47, 53, 83, 87, 141, 159, 249, 1363, 1537, 2407, 2491, 3901, 4089, 4399, 4611, 7221, 7473, 11703, 13197, 72239, 113129, 127571, 206753, 216717, 339387, 382713, 620259, 5995837, 17987511]

約数ペア:

[(1, 17987511), (3, 5995837), (29, 620259), (47, 382713), (53, 339387), (83, 216717), (87, 206753), (141, 127571), (159, 113129), (249, 72239), (1363, 13197), (1537, 11703), (2407, 7473), (2491, 7221), (3901, 4611), (4089, 4399)]