199023980

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{54979}}^1$

素因数の和:55169

約数の個数: 24

約数和(自身を含む): 420267120

約数和(自身を除く): 221243140

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 54979, 109958, 219916, 274895, 549790, 1099580, 9951199, 19902398, 39804796, 49755995, 99511990, 199023980]

約数ペア:

[(1, 199023980), (2, 99511990), (4, 49755995), (5, 39804796), (10, 19902398), (20, 9951199), (181, 1099580), (362, 549790), (724, 274895), (905, 219916), (1810, 109958), (3620, 54979)]