19871248

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{40063}}^1$

素因数の和:40102

約数の個数: 20

約数和(自身を含む): 39743488

約数和(自身を除く): 19872240

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 40063, 80126, 160252, 320504, 641008, 1241953, 2483906, 4967812, 9935624, 19871248]

約数ペア:

[(1, 19871248), (2, 9935624), (4, 4967812), (8, 2483906), (16, 1241953), (31, 641008), (62, 320504), (124, 160252), (248, 80126), (496, 40063)]