906640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{1619}}^1$

素因数の和:1639

約数の個数: 40

約数和(自身を含む): 2410560

約数和(自身を除く): 1503920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 1619, 3238, 6476, 8095, 11333, 12952, 16190, 22666, 25904, 32380, 45332, 56665, 64760, 90664, 113330, 129520, 181328, 226660, 453320, 906640]

約数ペア:

[(1, 906640), (2, 453320), (4, 226660), (5, 181328), (7, 129520), (8, 113330), (10, 90664), (14, 64760), (16, 56665), (20, 45332), (28, 32380), (35, 25904), (40, 22666), (56, 16190), (70, 12952), (80, 11333), (112, 8095), (140, 6476), (280, 3238), (560, 1619)]