77388640

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{9871}}^1$

素因数の和:9900

約数の個数: 72

約数和(自身を含む): 212702112

約数和(自身を除く): 135313472

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 9871, 19742, 39484, 49355, 69097, 78968, 98710, 138194, 157936, 197420, 276388, 315872, 345485, 394840, 483679, 552776, 690970, 789680, 967358, 1105552, 1381940, 1579360, 1934716, 2211104, 2418395, 2763880, 3869432, 4836790, 5527760, 7738864, 9673580, 11055520, 15477728, 19347160, 38694320, 77388640]

約数ペア:

[(1, 77388640), (2, 38694320), (4, 19347160), (5, 15477728), (7, 11055520), (8, 9673580), (10, 7738864), (14, 5527760), (16, 4836790), (20, 3869432), (28, 2763880), (32, 2418395), (35, 2211104), (40, 1934716), (49, 1579360), (56, 1381940), (70, 1105552), (80, 967358), (98, 789680), (112, 690970), (140, 552776), (160, 483679), (196, 394840), (224, 345485), (245, 315872), (280, 276388), (392, 197420), (490, 157936), (560, 138194), (784, 98710), (980, 78968), (1120, 69097), (1568, 49355), (1960, 39484), (3920, 19742), (7840, 9871)]