21285138

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{13697}}^1$

素因数の和:13746

約数の個数: 32

約数和(自身を含む): 49970304

約数和(自身を除く): 28685166

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 74, 111, 222, 259, 518, 777, 1554, 13697, 27394, 41091, 82182, 95879, 191758, 287637, 506789, 575274, 1013578, 1520367, 3040734, 3547523, 7095046, 10642569, 21285138]

約数ペア:

[(1, 21285138), (2, 10642569), (3, 7095046), (6, 3547523), (7, 3040734), (14, 1520367), (21, 1013578), (37, 575274), (42, 506789), (74, 287637), (111, 191758), (222, 95879), (259, 82182), (518, 41091), (777, 27394), (1554, 13697)]