15663980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41221}}^1$

素因数の和:41249

約数の個数: 24

約数和(自身を含む): 34626480

約数和(自身を除く): 18962500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 41221, 82442, 164884, 206105, 412210, 783199, 824420, 1566398, 3132796, 3915995, 7831990, 15663980]

約数ペア:

[(1, 15663980), (2, 7831990), (4, 3915995), (5, 3132796), (10, 1566398), (19, 824420), (20, 783199), (38, 412210), (76, 206105), (95, 164884), (190, 82442), (380, 41221)]