61534840

素因数分解:

$2^3\times 5^1\times {\mathrm{997}}^1\times {\mathrm{1543}}^1$

素因数の和:2551

約数の個数: 32

約数和(自身を含む): 138682080

約数和(自身を除く): 77147240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 997, 1543, 1994, 3086, 3988, 4985, 6172, 7715, 7976, 9970, 12344, 15430, 19940, 30860, 39880, 61720, 1538371, 3076742, 6153484, 7691855, 12306968, 15383710, 30767420, 61534840]

約数ペア:

[(1, 61534840), (2, 30767420), (4, 15383710), (5, 12306968), (8, 7691855), (10, 6153484), (20, 3076742), (40, 1538371), (997, 61720), (1543, 39880), (1994, 30860), (3086, 19940), (3988, 15430), (4985, 12344), (6172, 9970), (7715, 7976)]