221019940

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{42019}}^1$

素因数の和:42291

約数の個数: 24

約数和(自身を含む): 465917760

約数和(自身を除く): 244897820

約数列:

[1, 2, 4, 5, 10, 20, 263, 526, 1052, 1315, 2630, 5260, 42019, 84038, 168076, 210095, 420190, 840380, 11050997, 22101994, 44203988, 55254985, 110509970, 221019940]

約数ペア:

[(1, 221019940), (2, 110509970), (4, 55254985), (5, 44203988), (10, 22101994), (20, 11050997), (263, 840380), (526, 420190), (1052, 210095), (1315, 168076), (2630, 84038), (5260, 42019)]