131037680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{86209}}^1$

素因数の和:86241

約数の個数: 40

約数和(自身を含む): 320701200

約数和(自身を除く): 189663520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 86209, 172418, 344836, 431045, 689672, 862090, 1379344, 1637971, 1724180, 3275942, 3448360, 6551884, 6896720, 8189855, 13103768, 16379710, 26207536, 32759420, 65518840, 131037680]

約数ペア:

[(1, 131037680), (2, 65518840), (4, 32759420), (5, 26207536), (8, 16379710), (10, 13103768), (16, 8189855), (19, 6896720), (20, 6551884), (38, 3448360), (40, 3275942), (76, 1724180), (80, 1637971), (95, 1379344), (152, 862090), (190, 689672), (304, 431045), (380, 344836), (760, 172418), (1520, 86209)]