21849880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{42019}}^1$

素因数の和:42043

約数の個数: 32

約数和(自身を含む): 52945200

約数和(自身を除く): 31095320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 42019, 84038, 168076, 210095, 336152, 420190, 546247, 840380, 1092494, 1680760, 2184988, 2731235, 4369976, 5462470, 10924940, 21849880]

約数ペア:

[(1, 21849880), (2, 10924940), (4, 5462470), (5, 4369976), (8, 2731235), (10, 2184988), (13, 1680760), (20, 1092494), (26, 840380), (40, 546247), (52, 420190), (65, 336152), (104, 210095), (130, 168076), (260, 84038), (520, 42019)]