19564760

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{83}}^2$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 45185040

約数和(自身を除く): 25620280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 83, 142, 166, 284, 332, 355, 415, 568, 664, 710, 830, 1420, 1660, 2840, 3320, 5893, 6889, 11786, 13778, 23572, 27556, 29465, 34445, 47144, 55112, 58930, 68890, 117860, 137780, 235720, 275560, 489119, 978238, 1956476, 2445595, 3912952, 4891190, 9782380, 19564760]

約数ペア:

[(1, 19564760), (2, 9782380), (4, 4891190), (5, 3912952), (8, 2445595), (10, 1956476), (20, 978238), (40, 489119), (71, 275560), (83, 235720), (142, 137780), (166, 117860), (284, 68890), (332, 58930), (355, 55112), (415, 47144), (568, 34445), (664, 29465), (710, 27556), (830, 23572), (1420, 13778), (1660, 11786), (2840, 6889), (3320, 5893)]