13105280

素因数分解:

$2^7\times 5^1\times {\mathrm{20477}}^1$

素因数の和:20496

約数の個数: 32

約数和(自身を含む): 31331340

約数和(自身を除く): 18226060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 20477, 40954, 81908, 102385, 163816, 204770, 327632, 409540, 655264, 819080, 1310528, 1638160, 2621056, 3276320, 6552640, 13105280]

約数ペア:

[(1, 13105280), (2, 6552640), (4, 3276320), (5, 2621056), (8, 1638160), (10, 1310528), (16, 819080), (20, 655264), (32, 409540), (40, 327632), (64, 204770), (80, 163816), (128, 102385), (160, 81908), (320, 40954), (640, 20477)]