19999635

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:379

約数の個数: 32

約数和(自身を含む): 32970240

約数和(自身を除く): 12970605

約数列:

[1, 3, 5, 15, 71, 89, 211, 213, 267, 355, 445, 633, 1055, 1065, 1335, 3165, 6319, 14981, 18779, 18957, 31595, 44943, 56337, 74905, 93895, 94785, 224715, 281685, 1333309, 3999927, 6666545, 19999635]

約数ペア:

[(1, 19999635), (3, 6666545), (5, 3999927), (15, 1333309), (71, 281685), (89, 224715), (211, 94785), (213, 93895), (267, 74905), (355, 56337), (445, 44943), (633, 31595), (1055, 18957), (1065, 18779), (1335, 14981), (3165, 6319)]