65243480

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{2521}}^1$

素因数の和:3179

約数の個数: 32

約数和(自身を含む): 147083040

約数和(自身を除く): 81839560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1294, 2521, 2588, 3235, 5042, 5176, 6470, 10084, 12605, 12940, 20168, 25210, 25880, 50420, 100840, 1631087, 3262174, 6524348, 8155435, 13048696, 16310870, 32621740, 65243480]

約数ペア:

[(1, 65243480), (2, 32621740), (4, 16310870), (5, 13048696), (8, 8155435), (10, 6524348), (20, 3262174), (40, 1631087), (647, 100840), (1294, 50420), (2521, 25880), (2588, 25210), (3235, 20168), (5042, 12940), (5176, 12605), (6470, 10084)]