18665080

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:221

約数の個数: 96

約数和(自身を含む): 49863600

約数和(自身を除く): 31198520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 89, 98, 107, 140, 178, 196, 214, 245, 280, 356, 392, 428, 445, 490, 535, 623, 712, 749, 856, 890, 980, 1070, 1246, 1498, 1780, 1960, 2140, 2492, 2996, 3115, 3560, 3745, 4280, 4361, 4984, 5243, 5992, 6230, 7490, 8722, 9523, 10486, 12460, 14980, 17444, 19046, 20972, 21805, 24920, 26215, 29960, 34888, 38092, 41944, 43610, 47615, 52430, 66661, 76184, 87220, 95230, 104860, 133322, 174440, 190460, 209720, 266644, 333305, 380920, 466627, 533288, 666610, 933254, 1333220, 1866508, 2333135, 2666440, 3733016, 4666270, 9332540, 18665080]

約数ペア:

[(1, 18665080), (2, 9332540), (4, 4666270), (5, 3733016), (7, 2666440), (8, 2333135), (10, 1866508), (14, 1333220), (20, 933254), (28, 666610), (35, 533288), (40, 466627), (49, 380920), (56, 333305), (70, 266644), (89, 209720), (98, 190460), (107, 174440), (140, 133322), (178, 104860), (196, 95230), (214, 87220), (245, 76184), (280, 66661), (356, 52430), (392, 47615), (428, 43610), (445, 41944), (490, 38092), (535, 34888), (623, 29960), (712, 26215), (749, 24920), (856, 21805), (890, 20972), (980, 19046), (1070, 17444), (1246, 14980), (1498, 12460), (1780, 10486), (1960, 9523), (2140, 8722), (2492, 7490), (2996, 6230), (3115, 5992), (3560, 5243), (3745, 4984), (4280, 4361)]