318513280

素因数分解:

$2^7\times 5^1\times {\mathrm{497677}}^1$

素因数の和:497696

約数の個数: 32

約数和(自身を含む): 761447340

約数和(自身を除く): 442934060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 497677, 995354, 1990708, 2488385, 3981416, 4976770, 7962832, 9953540, 15925664, 19907080, 31851328, 39814160, 63702656, 79628320, 159256640, 318513280]

約数ペア:

[(1, 318513280), (2, 159256640), (4, 79628320), (5, 63702656), (8, 39814160), (10, 31851328), (16, 19907080), (20, 15925664), (32, 9953540), (40, 7962832), (64, 4976770), (80, 3981416), (128, 2488385), (160, 1990708), (320, 995354), (640, 497677)]