21971640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{277}}^1\times {\mathrm{661}}^1$

素因数の和:952

約数の個数: 64

約数和(自身を含む): 66252960

約数和(自身を除く): 44281320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 277, 554, 661, 831, 1108, 1322, 1385, 1662, 1983, 2216, 2644, 2770, 3305, 3324, 3966, 4155, 5288, 5540, 6610, 6648, 7932, 8310, 9915, 11080, 13220, 15864, 16620, 19830, 26440, 33240, 39660, 79320, 183097, 366194, 549291, 732388, 915485, 1098582, 1464776, 1830970, 2197164, 2746455, 3661940, 4394328, 5492910, 7323880, 10985820, 21971640]

約数ペア:

[(1, 21971640), (2, 10985820), (3, 7323880), (4, 5492910), (5, 4394328), (6, 3661940), (8, 2746455), (10, 2197164), (12, 1830970), (15, 1464776), (20, 1098582), (24, 915485), (30, 732388), (40, 549291), (60, 366194), (120, 183097), (277, 79320), (554, 39660), (661, 33240), (831, 26440), (1108, 19830), (1322, 16620), (1385, 15864), (1662, 13220), (1983, 11080), (2216, 9915), (2644, 8310), (2770, 7932), (3305, 6648), (3324, 6610), (3966, 5540), (4155, 5288)]