89471980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{103}}^1\times {\mathrm{257}}^1$

素因数の和:395

約数の個数: 72

約数和(自身を含む): 206230752

約数和(自身を除く): 116758772

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 103, 130, 169, 206, 257, 260, 338, 412, 514, 515, 676, 845, 1028, 1030, 1285, 1339, 1690, 2060, 2570, 2678, 3341, 3380, 5140, 5356, 6682, 6695, 13364, 13390, 16705, 17407, 26471, 26780, 33410, 34814, 43433, 52942, 66820, 69628, 86866, 87035, 105884, 132355, 173732, 174070, 217165, 264710, 344123, 348140, 434330, 529420, 688246, 868660, 1376492, 1720615, 3441230, 4473599, 6882460, 8947198, 17894396, 22367995, 44735990, 89471980]

約数ペア:

[(1, 89471980), (2, 44735990), (4, 22367995), (5, 17894396), (10, 8947198), (13, 6882460), (20, 4473599), (26, 3441230), (52, 1720615), (65, 1376492), (103, 868660), (130, 688246), (169, 529420), (206, 434330), (257, 348140), (260, 344123), (338, 264710), (412, 217165), (514, 174070), (515, 173732), (676, 132355), (845, 105884), (1028, 87035), (1030, 86866), (1285, 69628), (1339, 66820), (1690, 52942), (2060, 43433), (2570, 34814), (2678, 33410), (3341, 26780), (3380, 26471), (5140, 17407), (5356, 16705), (6682, 13390), (6695, 13364)]