18973160

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{503}}^1$

素因数の和:578

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 26749720

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 41, 46, 82, 92, 115, 164, 184, 205, 230, 328, 410, 460, 503, 820, 920, 943, 1006, 1640, 1886, 2012, 2515, 3772, 4024, 4715, 5030, 7544, 9430, 10060, 11569, 18860, 20120, 20623, 23138, 37720, 41246, 46276, 57845, 82492, 92552, 103115, 115690, 164984, 206230, 231380, 412460, 462760, 474329, 824920, 948658, 1897316, 2371645, 3794632, 4743290, 9486580, 18973160]

約数ペア:

[(1, 18973160), (2, 9486580), (4, 4743290), (5, 3794632), (8, 2371645), (10, 1897316), (20, 948658), (23, 824920), (40, 474329), (41, 462760), (46, 412460), (82, 231380), (92, 206230), (115, 164984), (164, 115690), (184, 103115), (205, 92552), (230, 82492), (328, 57845), (410, 46276), (460, 41246), (503, 37720), (820, 23138), (920, 20623), (943, 20120), (1006, 18860), (1640, 11569), (1886, 10060), (2012, 9430), (2515, 7544), (3772, 5030), (4024, 4715)]