19384775

素因数分解:

$5^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:311

約数の個数: 24

約数和(自身を含む): 24891264

約数和(自身を除く): 5506489

約数列:

[1, 5, 25, 67, 71, 163, 335, 355, 815, 1675, 1775, 4075, 4757, 10921, 11573, 23785, 54605, 57865, 118925, 273025, 289325, 775391, 3876955, 19384775]

約数ペア:

[(1, 19384775), (5, 3876955), (25, 775391), (67, 289325), (71, 273025), (163, 118925), (335, 57865), (355, 54605), (815, 23785), (1675, 11573), (1775, 10921), (4075, 4757)]