208919559

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{509}}^1$

素因数の和:671

約数の個数: 32

約数和(自身を含む): 296110080

約数和(自身を除く): 87190521

約数列:

[1, 3, 41, 47, 71, 123, 141, 213, 509, 1527, 1927, 2911, 3337, 5781, 8733, 10011, 20869, 23923, 36139, 62607, 71769, 108417, 136817, 410451, 980843, 1481699, 1698533, 2942529, 4445097, 5095599, 69639853, 208919559]

約数ペア:

[(1, 208919559), (3, 69639853), (41, 5095599), (47, 4445097), (71, 2942529), (123, 1698533), (141, 1481699), (213, 980843), (509, 410451), (1527, 136817), (1927, 108417), (2911, 71769), (3337, 62607), (5781, 36139), (8733, 23923), (10011, 20869)]