81226240

素因数分解:

$2^9\times 5^1\times {\mathrm{31729}}^1$

素因数の和:31752

約数の個数: 40

約数和(自身を含む): 194758740

約数和(自身を除く): 113532500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 31729, 63458, 126916, 158645, 253832, 317290, 507664, 634580, 1015328, 1269160, 2030656, 2538320, 4061312, 5076640, 8122624, 10153280, 16245248, 20306560, 40613120, 81226240]

約数ペア:

[(1, 81226240), (2, 40613120), (4, 20306560), (5, 16245248), (8, 10153280), (10, 8122624), (16, 5076640), (20, 4061312), (32, 2538320), (40, 2030656), (64, 1269160), (80, 1015328), (128, 634580), (160, 507664), (256, 317290), (320, 253832), (512, 158645), (640, 126916), (1280, 63458), (2560, 31729)]