19914896

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{40151}}^1$

素因数の和:40190

約数の個数: 20

約数和(自身を含む): 39830784

約数和(自身を除く): 19915888

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 40151, 80302, 160604, 321208, 642416, 1244681, 2489362, 4978724, 9957448, 19914896]

約数ペア:

[(1, 19914896), (2, 9957448), (4, 4978724), (8, 2489362), (16, 1244681), (31, 642416), (62, 321208), (124, 160604), (248, 80302), (496, 40151)]