21293585

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:341

約数の個数: 24

約数和(自身を含む): 27651456

約数和(自身を除く): 6357871

約数列:

[1, 5, 19, 47, 95, 235, 251, 361, 893, 1255, 1805, 4465, 4769, 11797, 16967, 23845, 58985, 84835, 90611, 224143, 453055, 1120715, 4258717, 21293585]

約数ペア:

[(1, 21293585), (5, 4258717), (19, 1120715), (47, 453055), (95, 224143), (235, 90611), (251, 84835), (361, 58985), (893, 23845), (1255, 16967), (1805, 11797), (4465, 4769)]