18109840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{443}}^1$

素因数の和:536

約数の個数: 80

約数和(自身を含む): 48889728

約数和(自身を除く): 30779888

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 73, 80, 112, 140, 146, 280, 292, 365, 443, 511, 560, 584, 730, 886, 1022, 1168, 1460, 1772, 2044, 2215, 2555, 2920, 3101, 3544, 4088, 4430, 5110, 5840, 6202, 7088, 8176, 8860, 10220, 12404, 15505, 17720, 20440, 24808, 31010, 32339, 35440, 40880, 49616, 62020, 64678, 124040, 129356, 161695, 226373, 248080, 258712, 323390, 452746, 517424, 646780, 905492, 1131865, 1293560, 1810984, 2263730, 2587120, 3621968, 4527460, 9054920, 18109840]

約数ペア:

[(1, 18109840), (2, 9054920), (4, 4527460), (5, 3621968), (7, 2587120), (8, 2263730), (10, 1810984), (14, 1293560), (16, 1131865), (20, 905492), (28, 646780), (35, 517424), (40, 452746), (56, 323390), (70, 258712), (73, 248080), (80, 226373), (112, 161695), (140, 129356), (146, 124040), (280, 64678), (292, 62020), (365, 49616), (443, 40880), (511, 35440), (560, 32339), (584, 31010), (730, 24808), (886, 20440), (1022, 17720), (1168, 15505), (1460, 12404), (1772, 10220), (2044, 8860), (2215, 8176), (2555, 7088), (2920, 6202), (3101, 5840), (3544, 5110), (4088, 4430)]