21982180147225

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{659}}^1\times {\mathrm{78486763}}^1$

素因数の和:78487449

約数の個数: 24

約数和(自身を含む): 28905105445920

約数和(自身を除く): 6922925298695

約数列:

[1, 5, 17, 25, 85, 425, 659, 3295, 11203, 16475, 56015, 280075, 78486763, 392433815, 1334274971, 1962169075, 6671374855, 33356874275, 51722776817, 258613884085, 879287205889, 1293069420425, 4396436029445, 21982180147225]

約数ペア:

[(1, 21982180147225), (5, 4396436029445), (17, 1293069420425), (25, 879287205889), (85, 258613884085), (425, 51722776817), (659, 33356874275), (3295, 6671374855), (11203, 1962169075), (16475, 1334274971), (56015, 392433815), (280075, 78486763)]