21871045

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{269}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 31726080

約数和(自身を除く): 9855035

約数列:

[1, 5, 7, 23, 35, 101, 115, 161, 269, 505, 707, 805, 1345, 1883, 2323, 3535, 6187, 9415, 11615, 16261, 27169, 30935, 43309, 81305, 135845, 190183, 216545, 624887, 950915, 3124435, 4374209, 21871045]

約数ペア:

[(1, 21871045), (5, 4374209), (7, 3124435), (23, 950915), (35, 624887), (101, 216545), (115, 190183), (161, 135845), (269, 81305), (505, 43309), (707, 30935), (805, 27169), (1345, 16261), (1883, 11615), (2323, 9415), (3535, 6187)]