19912080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{509}}^1$

素因数の和:688

約数の個数: 80

約数和(自身を含む): 62228160

約数和(自身を除く): 42316080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 163, 240, 326, 489, 509, 652, 815, 978, 1018, 1304, 1527, 1630, 1956, 2036, 2445, 2545, 2608, 3054, 3260, 3912, 4072, 4890, 5090, 6108, 6520, 7635, 7824, 8144, 9780, 10180, 12216, 13040, 15270, 19560, 20360, 24432, 30540, 39120, 40720, 61080, 82967, 122160, 165934, 248901, 331868, 414835, 497802, 663736, 829670, 995604, 1244505, 1327472, 1659340, 1991208, 2489010, 3318680, 3982416, 4978020, 6637360, 9956040, 19912080]

約数ペア:

[(1, 19912080), (2, 9956040), (3, 6637360), (4, 4978020), (5, 3982416), (6, 3318680), (8, 2489010), (10, 1991208), (12, 1659340), (15, 1327472), (16, 1244505), (20, 995604), (24, 829670), (30, 663736), (40, 497802), (48, 414835), (60, 331868), (80, 248901), (120, 165934), (163, 122160), (240, 82967), (326, 61080), (489, 40720), (509, 39120), (652, 30540), (815, 24432), (978, 20360), (1018, 19560), (1304, 15270), (1527, 13040), (1630, 12216), (1956, 10180), (2036, 9780), (2445, 8144), (2545, 7824), (2608, 7635), (3054, 6520), (3260, 6108), (3912, 5090), (4072, 4890)]