212121280

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{337}}^1$

素因数の和:642

約数の個数: 112

約数和(自身を含む): 581046336

約数和(自身を除く): 368925056

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 224, 280, 281, 320, 337, 448, 560, 562, 674, 1120, 1124, 1348, 1405, 1685, 1967, 2240, 2248, 2359, 2696, 2810, 3370, 3934, 4496, 4718, 5392, 5620, 6740, 7868, 8992, 9436, 9835, 10784, 11240, 11795, 13480, 15736, 17984, 18872, 19670, 21568, 22480, 23590, 26960, 31472, 37744, 39340, 44960, 47180, 53920, 62944, 75488, 78680, 89920, 94360, 94697, 107840, 125888, 150976, 157360, 188720, 189394, 314720, 377440, 378788, 473485, 629440, 662879, 754880, 757576, 946970, 1325758, 1515152, 1893940, 2651516, 3030304, 3314395, 3787880, 5303032, 6060608, 6628790, 7575760, 10606064, 13257580, 15151520, 21212128, 26515160, 30303040, 42424256, 53030320, 106060640, 212121280]

約数ペア:

[(1, 212121280), (2, 106060640), (4, 53030320), (5, 42424256), (7, 30303040), (8, 26515160), (10, 21212128), (14, 15151520), (16, 13257580), (20, 10606064), (28, 7575760), (32, 6628790), (35, 6060608), (40, 5303032), (56, 3787880), (64, 3314395), (70, 3030304), (80, 2651516), (112, 1893940), (140, 1515152), (160, 1325758), (224, 946970), (280, 757576), (281, 754880), (320, 662879), (337, 629440), (448, 473485), (560, 378788), (562, 377440), (674, 314720), (1120, 189394), (1124, 188720), (1348, 157360), (1405, 150976), (1685, 125888), (1967, 107840), (2240, 94697), (2248, 94360), (2359, 89920), (2696, 78680), (2810, 75488), (3370, 62944), (3934, 53920), (4496, 47180), (4718, 44960), (5392, 39340), (5620, 37744), (6740, 31472), (7868, 26960), (8992, 23590), (9436, 22480), (9835, 21568), (10784, 19670), (11240, 18872), (11795, 17984), (13480, 15736)]