405963280

素因数分解:

$2^4\times 5^1\times {\mathrm{1229}}^1\times {\mathrm{4129}}^1$

素因数の和:5371

約数の個数: 40

約数和(自身を含む): 944861400

約数和(自身を除く): 538898120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1229, 2458, 4129, 4916, 6145, 8258, 9832, 12290, 16516, 19664, 20645, 24580, 33032, 41290, 49160, 66064, 82580, 98320, 165160, 330320, 5074541, 10149082, 20298164, 25372705, 40596328, 50745410, 81192656, 101490820, 202981640, 405963280]

約数ペア:

[(1, 405963280), (2, 202981640), (4, 101490820), (5, 81192656), (8, 50745410), (10, 40596328), (16, 25372705), (20, 20298164), (40, 10149082), (80, 5074541), (1229, 330320), (2458, 165160), (4129, 98320), (4916, 82580), (6145, 66064), (8258, 49160), (9832, 41290), (12290, 33032), (16516, 24580), (19664, 20645)]