80418280

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:394

約数の個数: 64

約数和(自身を含む): 185328000

約数和(自身を除く): 104909720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 131, 149, 206, 262, 298, 412, 515, 524, 596, 655, 745, 824, 1030, 1048, 1192, 1310, 1490, 2060, 2620, 2980, 4120, 5240, 5960, 13493, 15347, 19519, 26986, 30694, 39038, 53972, 61388, 67465, 76735, 78076, 97595, 107944, 122776, 134930, 153470, 156152, 195190, 269860, 306940, 390380, 539720, 613880, 780760, 2010457, 4020914, 8041828, 10052285, 16083656, 20104570, 40209140, 80418280]

約数ペア:

[(1, 80418280), (2, 40209140), (4, 20104570), (5, 16083656), (8, 10052285), (10, 8041828), (20, 4020914), (40, 2010457), (103, 780760), (131, 613880), (149, 539720), (206, 390380), (262, 306940), (298, 269860), (412, 195190), (515, 156152), (524, 153470), (596, 134930), (655, 122776), (745, 107944), (824, 97595), (1030, 78076), (1048, 76735), (1192, 67465), (1310, 61388), (1490, 53972), (2060, 39038), (2620, 30694), (2980, 26986), (4120, 19519), (5240, 15347), (5960, 13493)]