7871980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 17519040

約数和(自身を除く): 9647060

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 109, 115, 157, 218, 230, 314, 436, 460, 545, 628, 785, 1090, 1570, 2180, 2507, 3140, 3611, 5014, 7222, 10028, 12535, 14444, 17113, 18055, 25070, 34226, 36110, 50140, 68452, 72220, 85565, 171130, 342260, 393599, 787198, 1574396, 1967995, 3935990, 7871980]

約数ペア:

[(1, 7871980), (2, 3935990), (4, 1967995), (5, 1574396), (10, 787198), (20, 393599), (23, 342260), (46, 171130), (92, 85565), (109, 72220), (115, 68452), (157, 50140), (218, 36110), (230, 34226), (314, 25070), (436, 18055), (460, 17113), (545, 14444), (628, 12535), (785, 10028), (1090, 7222), (1570, 5014), (2180, 3611), (2507, 3140)]