19740520

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{6247}}^1$

素因数の和:6337

約数の個数: 32

約数和(自身を含む): 44985600

約数和(自身を除く): 25245080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 6247, 12494, 24988, 31235, 49976, 62470, 124940, 249880, 493513, 987026, 1974052, 2467565, 3948104, 4935130, 9870260, 19740520]

約数ペア:

[(1, 19740520), (2, 9870260), (4, 4935130), (5, 3948104), (8, 2467565), (10, 1974052), (20, 987026), (40, 493513), (79, 249880), (158, 124940), (316, 62470), (395, 49976), (632, 31235), (790, 24988), (1580, 12494), (3160, 6247)]