19490940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{499}}^1$

素因数の和:552

約数の個数: 144

約数和(自身を含む): 69888000

約数和(自身を除く): 50397060

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 31, 35, 36, 42, 45, 60, 62, 63, 70, 84, 90, 93, 105, 124, 126, 140, 155, 180, 186, 210, 217, 252, 279, 310, 315, 372, 420, 434, 465, 499, 558, 620, 630, 651, 868, 930, 998, 1085, 1116, 1260, 1302, 1395, 1497, 1860, 1953, 1996, 2170, 2495, 2604, 2790, 2994, 3255, 3493, 3906, 4340, 4491, 4990, 5580, 5988, 6510, 6986, 7485, 7812, 8982, 9765, 9980, 10479, 13020, 13972, 14970, 15469, 17465, 17964, 19530, 20958, 22455, 29940, 30938, 31437, 34930, 39060, 41916, 44910, 46407, 52395, 61876, 62874, 69860, 77345, 89820, 92814, 104790, 108283, 125748, 139221, 154690, 157185, 185628, 209580, 216566, 232035, 278442, 309380, 314370, 324849, 433132, 464070, 541415, 556884, 628740, 649698, 696105, 928140, 974547, 1082830, 1299396, 1392210, 1624245, 1949094, 2165660, 2784420, 3248490, 3898188, 4872735, 6496980, 9745470, 19490940]

約数ペア:

[(1, 19490940), (2, 9745470), (3, 6496980), (4, 4872735), (5, 3898188), (6, 3248490), (7, 2784420), (9, 2165660), (10, 1949094), (12, 1624245), (14, 1392210), (15, 1299396), (18, 1082830), (20, 974547), (21, 928140), (28, 696105), (30, 649698), (31, 628740), (35, 556884), (36, 541415), (42, 464070), (45, 433132), (60, 324849), (62, 314370), (63, 309380), (70, 278442), (84, 232035), (90, 216566), (93, 209580), (105, 185628), (124, 157185), (126, 154690), (140, 139221), (155, 125748), (180, 108283), (186, 104790), (210, 92814), (217, 89820), (252, 77345), (279, 69860), (310, 62874), (315, 61876), (372, 52395), (420, 46407), (434, 44910), (465, 41916), (499, 39060), (558, 34930), (620, 31437), (630, 30938), (651, 29940), (868, 22455), (930, 20958), (998, 19530), (1085, 17964), (1116, 17465), (1260, 15469), (1302, 14970), (1395, 13972), (1497, 13020), (1860, 10479), (1953, 9980), (1996, 9765), (2170, 8982), (2495, 7812), (2604, 7485), (2790, 6986), (2994, 6510), (3255, 5988), (3493, 5580), (3906, 4990), (4340, 4491)]