217486640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{388369}}^1$

素因数の和:388389

約数の個数: 40

約数和(自身を含む): 577894560

約数和(自身を除く): 360407920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 388369, 776738, 1553476, 1941845, 2718583, 3106952, 3883690, 5437166, 6213904, 7767380, 10874332, 13592915, 15534760, 21748664, 27185830, 31069520, 43497328, 54371660, 108743320, 217486640]

約数ペア:

[(1, 217486640), (2, 108743320), (4, 54371660), (5, 43497328), (7, 31069520), (8, 27185830), (10, 21748664), (14, 15534760), (16, 13592915), (20, 10874332), (28, 7767380), (35, 6213904), (40, 5437166), (56, 3883690), (70, 3106952), (80, 2718583), (112, 1941845), (140, 1553476), (280, 776738), (560, 388369)]