408060920

素因数分解:

$2^3\times 5^1\times {\mathrm{863}}^1\times {\mathrm{11821}}^1$

素因数の和:12695

約数の個数: 32

約数和(自身を含む): 919278720

約数和(自身を除く): 511217800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 863, 1726, 3452, 4315, 6904, 8630, 11821, 17260, 23642, 34520, 47284, 59105, 94568, 118210, 236420, 472840, 10201523, 20403046, 40806092, 51007615, 81612184, 102015230, 204030460, 408060920]

約数ペア:

[(1, 408060920), (2, 204030460), (4, 102015230), (5, 81612184), (8, 51007615), (10, 40806092), (20, 20403046), (40, 10201523), (863, 472840), (1726, 236420), (3452, 118210), (4315, 94568), (6904, 59105), (8630, 47284), (11821, 34520), (17260, 23642)]