21888417

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:233

約数の個数: 32

約数和(自身を含む): 31726080

約数和(自身を除く): 9837663

約数列:

[1, 3, 29, 47, 53, 87, 101, 141, 159, 303, 1363, 1537, 2491, 2929, 4089, 4611, 4747, 5353, 7473, 8787, 14241, 16059, 72239, 137663, 155237, 216717, 251591, 412989, 465711, 754773, 7296139, 21888417]

約数ペア:

[(1, 21888417), (3, 7296139), (29, 754773), (47, 465711), (53, 412989), (87, 251591), (101, 216717), (141, 155237), (159, 137663), (303, 72239), (1363, 16059), (1537, 14241), (2491, 8787), (2929, 7473), (4089, 5353), (4611, 4747)]