78155980

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{11393}}^1$

素因数の和:11423

約数の個数: 48

約数和(自身を含む): 191419200

約数和(自身を除く): 113263220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 11393, 22786, 45572, 56965, 79751, 113930, 159502, 227860, 319004, 398755, 558257, 797510, 1116514, 1595020, 2233028, 2791285, 3907799, 5582570, 7815598, 11165140, 15631196, 19538995, 39077990, 78155980]

約数ペア:

[(1, 78155980), (2, 39077990), (4, 19538995), (5, 15631196), (7, 11165140), (10, 7815598), (14, 5582570), (20, 3907799), (28, 2791285), (35, 2233028), (49, 1595020), (70, 1116514), (98, 797510), (140, 558257), (196, 398755), (245, 319004), (343, 227860), (490, 159502), (686, 113930), (980, 79751), (1372, 56965), (1715, 45572), (3430, 22786), (6860, 11393)]